Journal Papers (ISI)

Biblio logo(90) Damage spreading and the Lyapunov spectrum of cellular automata and Boolean networks
M. Vispoel, A.J. Daly and J.M. Baetens
(2024) CHAOS, SOLITONS & FRACTALS. 184, 114989.
Biblio logo(89) Cooperative interactions between invader and resident microbial community members weaken the negative diversity-invasion relationship
J. Vandermaesen, A.J. Daly, P.C. Mawarda, J.M. Baetens, B. De Baets, N. Boon and D. Springael
(2024) ECOLOGY LETTERS. 27, e14433.
Biblio logo(88) Temperature-driven dynamics: Unraveling the impact of climate change on cryptic species interactions within the Litoditis marina complex
A.-M. Vafeiadou, K. Geldhof, W. Barhdadi, J.M. Baetens, B. De Baets, T. Moens and A.J. Daly
(2024) PEERJ. 12, e17324.
Biblio logo(87) Environment-dependent population dynamics emerging from dynamic energy budgets and individual-scale movement behavior
W. Barhdadi, A.J. Daly, J.M. Baetens and B. De Baets
(2024) OIKOS. 2024, e09986.
Biblio logo(86) A critical review of common pitfalls and guidelines to effectively infer parameters of agent-based models using Approximate Bayesian Computation
L. De Visscher, B. De Baets and J.M. Baetens
(2024) ENVIRONMENTAL MODELLING AND SOFTWARE. 172, 105905.
Biblio logo(85) pySODM : simulating and optimizing dynamical models in Python 3
T.W. Alleman, C.V. Stevens and J.M. Baetens
(2023) JOURNAL OF COMPUTATIONAL SCIENCE. 73, 102148.
Biblio logo(84) A stochastic mobility-driven spatially explicit SEIQRD COVID-19 model with VOCs, seasonality, and vaccines
T.W. Alleman, M. Rollier, J. Vergeynst and J.M. Baetens
(2023) APPLIED MATHEMATICAL MODELLING. 123, 507-525.
Biblio logo(83) Response of phytoplankton functional types to Hurricane Fabian (2003) in the Sargasso Sea
D. Avila-Alonso, J.M. Baetens, R. Cardenas and B. De Baets
(2023) MARINE ENVIRONMENTAL RESEARCH. 190, 106079.
Biblio logo(82) Mobility and the spatial spread of SARS-CoV-2 in Belgium
M. Rollier, G. Miranda, J. Vergeynst, J. Meys, T.W. Alleman, the Belgian Collaborative Group on COVID-19 Hospital Surveillance and J.M. Baetens
(2023) MATHEMATICAL BIOSCIENCES. 360, 108957.
Biblio logo(81) The potential of surveillance data for dengue risk mapping: an evaluation of different approaches in Cuba
W. Baldoquín Rodríguez, M. Mirabal, P. Van der Stuyft, T. Gómez Padrón, V. Fonseca, R.M. Castillo, S. Monteagudo Díaz, J.M. Baetens, B. De Baets, M.E. Toledo Romaní and V. Vanlerberghe
(2023) TROPICAL MEDICINE AND INFECTIOUS DISEASE. 8, 230.
Biblio logo(80) Lyapunov exponents of multi-state cellular automata
M. Vispoel, A.J. Daly and J.M. Baetens
(2023) CHAOS. 33, 043108.
Biblio logo(79) No bacterial-mediated alleviation of thermal stress in a brown seaweed suggests the absence of ecological bacterial rescue effects
S. Delva, B. De Baets, J.M. Baetens, O. De Clerck and W. Stock
(2023) SCIENCE OF THE TOTAL ENVIRONMENT. 876, 162532.
Biblio logo(78) Quo vadis, agent-based modelling tools?
A.J. Daly, L. De Visscher, J.M. Baetens and B. De Baets
(2022) ENVIRONMENTAL MODELLING AND SOFTWARE. 157, 105514.
Biblio logo(77) Moisture dynamics of wood-based panels and wood fibre insulation materials
L. De Ligne, J. Van Acker, J.M. Baetens, S. Omar, B. De Baets, L. Thygesen, J. Van den Bulcke and E.E. Thybring
(2022) FRONTIERS IN PLANT SCIENCE. 13, 951175.
Biblio logo(76) Improved wood species identification based on multi-view imagery of the three anatomical planes
N. Rosa da Silva, V. Deklerck, J.M. Baetens, J. Van den Bulcke, M. De Ridder, M. Rousseau, O. Martinez Bruno, H. Beeckman, J. Van Acker, B. De Baets and J. Verwaeren
(2022) PLANT METHODS. 18, 79.
Biblio logo(75) Studying the spatio-temporal dynamics of wood decay with X-ray CT scanning
L. De Ligne, A. De Muynck, J. Caes, J.M. Baetens, B. De Baets, L. Van Hoorebeke, J. Van Acker and J. Van den Bulcke
(2022) HOLZFORSCHUNG. 76, 408-420.
Biblio logo(74) Progress, gaps and obstacles in the classification of cellular automata
M. Vispoel, A.J. Daly and J.M. Baetens
(2022) PHYSICA D: NONLINEAR PHENOMENA. 432, 133074.
Biblio logo(73) Interspecies interactions of the 2,6-dichlorobenzamide (BAM) degrading Aminobacter sp. MSH1 with resident sandfilter bacteria: indications for mutual cooperative interactions that improve BAM mineralization activity
J. Vandermaesen, S. Du, A.J. Daly, J.M. Baetens, B. Horemans, B. De Baets, N. Boon and D. Springael
(2022) ENVIRONMENTAL SCIENCE & TECHNOLOGY. 56, 1352-1364.
Biblio logo(72) Assessing the effects of non-pharmaceutical interventions on SARS-CoV-2 transmission by means of an extended SEIQRD model and public mobility data  
T.W. Alleman, J. Vergeynst, L. De Visscher, M. Rollier, D. Illana, E. Torfs, I. Nopens and J.M. Baetens
(2021) EPIDEMICS. 37, 100505.
Biblio logo(71) Cost-effectiveness of COVID-19 policy measures: a systematic review
S. Vandepitte, T.W. Alleman, I. Nopens, J.M. Baetens, S. Coenen and D. De Smedt
(2021) VALUE IN HEALTH. 24, 1551-1569.
Biblio logo(70) Two-dimensional rotation-symmetric number-conserving cellular automata
A. Dzedzej, B. Wolnik, A. Nenca, J.M. Baetens and B. De Baets
(2021) INFORMATION SCIENCES. 577, 599-621.
Biblio logo(69) Unravelling the natural durability of wood: revealing the impact of decay-influencing characteristics other than fungicidal components
L. De Ligne, J. Van den Bulcke, J.M. Baetens, B. De Baets, G. Wang, I. De Windt, H. Beeckman and J. Van Acker
(2021) HOLZFORSCHUNG. 75, 368-378.
Biblio logo(68) Untangling the mechanisms of cryptic species coexistence in a nematode community through individual-based modelling
A.J. Daly, N. De Meester, J.M. Baetens, T. Moens and B. De Baets
(2021) OIKOS. 130, 587-600.
Biblio logo(67) Oceanic response to the consecutive Hurricanes Dorian and Humberto (2019) in the Sargasso Sea
D. Avila-Alonso, J.M. Baetens, R. Cardenas and B. De Baets
(2021) NATURAL HAZARDS AND EARTH SYSTEM SCIENCES. 21, 837-859.
Biblio logo(66) Efficient enumeration of three-state two-dimensional number-conserving cellular automata
A. Dzedzej, B. Wolnik, A. Nenca, J.M. Baetens and B. De Baets
(2020) INFORMATION AND COMPUTATION. 274, 104534.
Biblio logo(65) Quantifying and reducing epistemic uncertainty of passive acoustic telemetry data from longitudinal aquatic systems
S. Bruneel, P. Verhelst, J. Reubens, J.M. Baetens, J. Coeck, T. Moens and P. Goethals
(2020) ECOLOGICAL INFORMATICS. 59, 101133.
Biblio logo(64) Spatio-temporal variability of oceanographic conditions in the Exclusive Economic Zone of Cuba
D. Avila-Alonso, J.M. Baetens, R. Cardenas and B. De Baets
(2020) JOURNAL OF MARINE SYSTEMS. 212, 103416.
Biblio logo(63) A split-and-perturb decomposition of number-conserving cellular automata
B. Wolnik, A. Nenca, J.M. Baetens and B. De Baets
(2020) PHYSICA D: NONLINEAR PHENOMENA. 431, 132645.
Biblio logo(62) Cracking the code: real-time monitoring of wood drying and the occurrence of cracks
H.P. Botter-Kuisch, J. Van den Bulcke, J.M. Baetens and J. Van Acker
(2020) WOOD SCIENCE AND TECHNOLOGY. 54, 1029-1049.
Biblio logo(61) Oceanic response to Hurricane Irma (2017) in the Exclusive Economic Zone of Cuba and the eastern Gulf of Mexico
D. Avila-Alonso, J.M. Baetens, R. Cardenas and B. De Baets
(2020) OCEAN DYNAMICS. 70, 603-619.
Biblio logo(60) Wildfire ignition probability in Belgium
A. Depicker, B. De Baets and J.M. Baetens
(2020) NATURAL HAZARDS AND EARTH SYSTEMS SCIENCES. 20, 363-376.
Biblio logo(59) Identification of Cellular Automata based on incomplete observations with bounded time gaps
W. Bolt, J.M. Baetens and B. De Baets
(2020) IEEE TRANSACTIONS ON CYBERNETICS. 50, 971-984.
Biblio logo(58) Using intransitive triads to determine the final species richness of competition networks
N. Muyinda, J.M. Baetens, B. De Baets and S. Rao
(2020) PHYSICA A. 540, 123249.
Biblio logo(57) Guiding mineralization co-culture discovery using Bayesian optimization
A.J. Daly, M. Stock, J.M. Baetens and B. De Baets
(2019) ENVIRONMENTAL SCIENCE AND TECHNOLOGY. 53, 14459-14469.
Biblio logo(56) A statistical approach to the identification of Diploid Cellular Automata based on incomplete observations
W. Bolt, A. Bolt, B. Wolnik, J.M. Baetens and B. De Baets
(2019) BIOSYSTEMS. 186, 103976.
Biblio logo(55) Lattice-based versus lattice-free individual-based models: impact on coexistence in competitive communities
A.J. Daly, W. Quaghebeur, T.M.A. Depraetere, J.M. Baetens and B. De Baets
(2019) NATURAL COMPUTING. 18, 855-864.
Biblio logo(54) Real-time prediction of influenza outbreaks in Belgium
G.H.B. Miranda, J.M. Baetens, N. Bossuyt, O.M. Bruno and B. De Baets
(2019) EPIDEMICS. 28, 100341.
Biblio logo(53) Analysis of spatio-temporal fungal growth dynamics under different environmental conditions
L. De Ligne, G. Vidal-Diez de Ulzurrun, J.M. Baetens, J. Van Den Bulcke, J. Van Acker and B. De Baets
(2019) IMA FUNGUS. 10, 7.
Biblio logo(52) The impact of hurricanes on biogeochemical indicators of the Exclusive Economic Zone of Cuba
D. Avila-Alonso, J.M. Baetens, R. Cardenas and B. De Baets
(2019) REMOTE SENSING OF ENVIRONMENT. 233, 111339.
Biblio logo(51) A two-layer representation of four-state reversible number-conserving 2D cellular automata
A. Dzedzej, B. Wolnik, M. Dziemiańczuk, A. Nenca, J.M. Baetens and B. De Baets
(2019) JOURNAL OF STATISTICAL MECHANICS: THEORY AND EXPERIMENT. 2019, 073202.
Biblio logo(50) A validated expert-based habitat suitability assessment for Eagle Owls in Limburg, the Netherlands
S. Van Nieuland, J.M. Baetens, S. Vriens, R. Janssen and B. De Baets
(2019) EUROPEAN JOURNAL OF WILDLIFE RESEARCH. 65, 48.
Biblio logo(49) Two-dimensional affine continuous cellular automata solving the relaxed density classification problem
M. Dembowski, B. Wolnik, W. Bolt, J.M. Baetens and B. De Baets
(2019) JOURNAL OF CELLULAR AUTOMATA. 14, 191-212.
Biblio logo(48) Impact of a helical ridge within a tubular membrane channel on fluid flow and particle behaviour: a model-based analysis
W. Naessens, B. De Jaegher, L. Vandewalle, K. Van Geem, J.M. Baetens and I. Nopens
(2018) INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH. 57, 15586-15596.
Biblio logo(47) Three-species competition with non-deterministic outcomes
T. Depraetere, A.J. Daly, J.M. Baetens and B. De Baets
(2018) CHAOS. 28, 123124.
Biblio logo(46) Navigating on a chemical radar: Usage of root exudates by foraging Diabrotica virgifera virgifera larvae
M. Schumann, Z.S. Ladin, J.M. Baetens and I. Hiltpold
(2018) JOURNAL OF APPLIED ENTOMOLOGY. 142, 911-920.
Biblio logo(45) Habitat characteristics of possible hunting grounds of the Eurasian Eagle Owl in Limburg, the Netherlands
S. Van Nieuland, J.M. Baetens, R. Janssen and B. De Baets
(2018) ARDEA. 106, 147-162.
Biblio logo(44) Affine continuous cellular automata solving the fixed-length density classification problem
M. Dembowski, B. Wolnik, W. Bolt, J.M. Baetens and B. De Baets
(2018) NATURAL COMPUTING. 17, 467-477.
Biblio logo(43) Differential post-fledging habitat use of Nearctic-Neotropical migratory birds within an urbanized landscape
Z.S. Ladin, S. Van Nieuland, S.A. Adalsteinsson, V. D'Amico, J.L. Bowman, J.J. Buler, J.M. Baetens, B. De Baets and W.G. Shriver
(2018) MOVEMENT ECOLOGY. 6, 17.
Biblio logo(42) A note on reversibility of 2D cellular automata on hexagonal grids
A. Augustynowicz, J.M. Baetens, B. De Baets, A. Dzedzej, A. Nenca and B. Wolnik
(2018) JOURNAL OF CELLULAR AUTOMATA. 13, 521-525.
Biblio logo(41) Ecological diversity: measuring the unmeasurable
A.J. Daly, J.M. Baetens and B. De Baets
(2018) MATHEMATICS. 6, 119.
Biblio logo(40) Introducing Lyapunov profiles of cellular automata
J.M. Baetens and J. Gravner
(2018) JOURNAL OF CELLULAR AUTOMATA. 13, 267-286.
Biblio logo(39) Individual-based modelling of invasion in bioaugmented sand filter communities
A.J. Daly, J.M. Baetens, J. Vandermaesen, N. Boon, D. Springael and B. De Baets
(2018) PROCESSES. 6, PR6010002.
Biblio logo(38) Number-conserving cellular automata with a von Neumann neighborhood of range one
B. Wolnik, A. Dzedzej, J.M. Baetens and B. De Baets
(2017) JOURNAL OF PHYSICS A: MATHEMATICAL AND THEORETICAL. 50, 435101.
Biblio logo(37) Density-conserving affine continuous cellular automata solving the relaxed density classification problem
B. Wolnik, M. Dembowski, W. Bolt, J.M. Baetens and B. De Baets
(2017) JOURNAL OF PHYSICS A: MATHEMATICAL AND THEORETICAL. 50, 345103.
Biblio logo(36) Assessing the effects of ultraviolet radiation on the photosynthetic potential in Archean marine environments
D. Avila-Alonso, J.M. Baetens, R. Cardenas and B. De Baets
(2017) INTERNATIONAL JOURNAL OF ASTROBIOLOGY. 16, 271-279.
Biblio logo(35) Modelling the effect of ultraviolet radiation on the photosynthetic potential of Prochlorococcus and Synechococcus cyanobacteria
D. Avila-Alonso, J.M. Baetens, R. Cardenas and B. De Baets
(2017) AQUATIC MICROBIAL ECOLOGY. 79, 149-164.
Biblio logo(34) Automated classification of wood transverse cross-section micro-imagery from 77 commercial Central-African timber species
N. Rosa da Silva, M. De Ridder, J.M. Baetens, J. Van den Bulcke, M. Rousseau, O. Martinez Bruno, H. Beeckman, J. Van Acker and B. De Baets
(2017) ANNALS OF FOREST SCIENCE. 74, 30.
Biblio logo(33) On the iota-delta function: a link between cellular automata and partial differential equations for modeling advection-dispersion from a constant source
L.C. de Sena Monteiro Ozelim, A.L.B. Cavalcante and J.M. Baetens
(2017) THE JOURNAL OF SUPERCOMPUTING. 73, 700-712.
Biblio logo(32) An analytical description of the time-integrated Brownian bridge
S. Van Nieuland, J.M. Baetens, H. De Meyer and B. De Baets
(2017) JOURNAL OF COMPUTATIONAL AND APPLIED MATHEMATICS. 36, 627-645.
Biblio logo(31) Modelling three-dimensional fungal growth in response to environmental stimuli
G. Vidal-Diez de Ulzurrun, J.M. Baetens, J. Van den Bulcke and B. De Baets
(2017) JOURNAL OF THEORETICAL BIOLOGY. 414, 35-49.
Biblio logo(30) On the dynamics of stochastic elementary cellular automata
J.M. Baetens, W. Van der Meeren and B. De Baets
(2017) JOURNAL OF CELLULAR AUTOMATA. 12, 63-80.
Biblio logo(29) The impact of resource dependence of the mechanisms of life on the spatial population dynamics of an in silico microbial community
A.J. Daly, J.M. Baetens and B. De Baets
(2016) CHAOS. 26, 123121.
Biblio logo(28) Stability of cellular automata trajectories revisited: branching walks and Lyapunov profiles
J.M. Baetens and J. Gravner
(2016) JOURNAL OF NONLINEAR SCIENCE. 26, 1329–1367.
Biblio logo(27) Spatially explicit modelling of the Belgian major endurance event `The 100 km Dodentocht'
S. Van Nieuland, J.M. Baetens and B. De Baets
(2016) PLOS ONE. 11, e0164981.
Biblio logo(26) Long-term dynamics in local host-parasite interactions linked to regional population trends
Z. Ladin, V. d’Amico, J.M. Baetens, R.R. Roth and W.G. Shriver
(2016) ECOSPHERE. 7, e01420.
Biblio logo(25) Predicting metapopulation responses to conservation in human-dominated landscapes
Z. Ladin, V. d’Amico, J.M. Baetens, R.R. Roth and W.G. Shriver
(2016) FRONTIERS IN ECOLOGY AND EVOLUTION. 4, 122.
Biblio logo(24) Classification of cellular automata through texture analysis
N. Rosa da Silva, J.M. Baetens, M.W. da Silva Oliveira, B. De Baets and O.M. Bruno
(2016) INFORMATION SCIENCES. 370-371, 33-49.
Biblio logo(23) In silico substrate dependence increases community productivity, threatens biodiversity
A.J. Daly, J.M. Baetens and B. De Baets
(2016) PHYSICAL REVIEW E. 93, 042414.
Biblio logo(22) On the decomposition of stochastic cellular automata
W. Bolt, J.M. Baetens and B. De Baets
(2015) JOURNAL OF COMPUTATIONAL SCIENCE. 11, 245-257.
Biblio logo(21) The impact of initial evenness on biodiversity maintenance for a four-species in silico bacterial community
A.J. Daly, J.M. Baetens and B. De Baets
(2015) JOURNAL OF THEORETICAL BIOLOGY. 387, 189-205.
Biblio logo(20) Automated image-based analysis of spatio-temporal fungal dynamics
G. Vidal-Diez de Ulzurrun, J.M. Baetens, J. Van den Bulcke, C. Lopez-Molina, I. De Windt and B. De Baets
(2015) FUNGAL GENETICS AND BIOLOGY. 84, 12-25.
Biblio logo(19) A dynamical systems approach to the discrimination of the modes of operation of cryptographic systems
J. Machicao, J.M. Baetens, A.G. Marco, B. De Baets and O.M. Bruno
(2015) COMMUNICATIONS IN NONLINEAR SCIENCE AND NUMERICAL SIMULATION. 29, 102-115.
Biblio logo(18) Unsupervised ridge detection using second order anisotropic Gaussian kernels
C. Lopez-Molina, G. Vidal-Diez de Ulzurrun, J.M. Baetens, J. Van den Bulcke and B. De Baets
(2015) SIGNAL PROCESSING. 116, 55-67.
Biblio logo(17) Network formation by contact arrested propagation
A. Hafver, E. Jettestuen, J.M. Baetens and M. Malthe-Sørenssen
(2014) PHYSICA A. 413, 240-255.
Biblio logo(16) Quantification of soil surface roughness evolution under simulated rainfall
J. Vermang, L.D. Norton, J.M. Baetens, C. Huang, W.M. Cornelis and D. Gabriels
(2013) TRANSACTIONS OF THE ASABE. 56, 505-514.
Biblio logo(15) Modelling a pike (Esox lucius) population in a lowland river using a cellular automaton
I.S. Pauwels, A.M. Mouton, J.M. Baetens, S. Van Nieuland, B. De Baets and P.L.M. Goethals
(2013) ECOLOGICAL INFORMATICS. 17, 46-57.
Biblio logo(14) A discrete stochastic model for oil migration in chocolate-coated confectionery
P. Van der Weeën, N. De Clercq, J.M. Baetens, C. Delbaere, K. Dewettinck and B. De Baets
(2013) JOURNAL OF FOOD ENGINEERING. 119, 602-610.
Biblio logo(13) An individual-based model for the migration of pike (Esox lucius) in the river Yser, Belgium
J.M. Baetens, S. Van Nieuland, I.S. Pauwels, B. De Baets, A.M. Mouton and P.L.M. Goethals
(2013) ECOLOGICAL MODELLING. 258, 40-52.
Biblio logo(12) Topology-induced phase transitions in totalistic cellular automata
J.M. Baetens and B. De Baets
(2013) PHYSICA D: NONLINEAR PHENOMENA. 249, 16-24.
Biblio logo(11) Influence of the topology of a cellular automaton on its dynamical properties
J.M. Baetens, K. De Loof and B. De Baets
(2013) COMMUNICATIONS IN NONLINEAR SCIENCE AND NUMERICAL SIMULATIONS. 18, 651-668.
Biblio logo(10) Cellular automata on irregular tessellations
J.M. Baetens and B. De Baets
(2012) DYNAMICAL SYSTEMS. 27, 411-430.
Biblio logo(9) Modelling the degradation kinetics of vitamin C in fruit juice in relation to the initial headspace oxygen concentration
I. Van Bree, J.M. Baetens, S. Samapundo, F. Devlieghere, R. Laleman, I. Vandekinderen, B. Noseda, R. Xhaferi, B. De Baets and B. De Meulenaer
(2012) FOOD CHEMISTRY. 134, 207-214.
Biblio logo(8) Modeling the photocatalytic degradation of moxifloxacin by means of a stochastic cellular automaton
P. Van der Weeën, J.M. Baetens, J. Verwaeren, X. Van Doorslaer, P.M. Heynderickx, J. Dewulf and B. De Baets
(2012) CHEMICAL ENGINEERING JOURNAL. 188, 181-190.
Biblio logo(7) An empirical analysis of explanatory variables affecting Fusarium head blight infection and deoxynivalenol content in wheat
S. Landschoot, W. Waegeman, K. Audenaert, J. Vandepitte, J.M. Baetens, B. De Baets and G. Haesaert
(2012) JOURNAL OF PLANT PATHOLOGY. 94, 135-147.
Biblio logo(6) Effect of asynchronous updating on the stability of cellular automata
J.M. Baetens, P. Van der Weeën and B. De Baets
(2012) CHAOS, SOLITONS AND FRACTALS. 45, 383-394.
Biblio logo(5) Design and parameterization of a stochastic cellular automaton describing a chemical reaction
P. Van der Weeën, J.M. Baetens and B. De Baets
(2011) JOURNAL OF COMPUTATIONAL CHEMISTRY. 32, 1952-1961.
Biblio logo(4) On the topological sensitivity of cellular automata
J.M. Baetens and B. De Baets
(2011) CHAOS. 21, 023108.
Biblio logo(3) Phenomenological study of irregular cellular automata based on Lyapunov exponents and Jacobians
J.M. Baetens and B. De Baets
(2010) CHAOS. 20, 033112.
Biblio logo(2) On the influence of coarse fragments on soil-water retention
J.M. Baetens, K. Verbist, W.M. Cornelis, D. Gabriels, and G. Soto
(2009) WATER RESOURCES RESEARCH. 45, W07408.
Biblio logo(1) Hydraulic conductivity as influenced by stoniness in degraded drylands of Chile
K. Verbist, J.M. Baetens, W.M. Cornelis, D. Gabriels, C. Torres, and G. Soto
(2009) SOIL SCIENCE SOCIETY OF AMERICA JOURNAL. 73, 471-484.