F. W. Nutter and J. Guan, Quantifying alfalfa yield losses caused by foliar diseases in Iowa?Ohio?Wisconsin?and Vermont?Plant Disease?2002, pp.269-277

J. Guan and F. W. Nutter, Relationships between defoliation, leaf area index, canopy reflectance, and forage yield in the alfalfa-leaf spot pathosystem, Computers and Electronics in Agriculture, vol.37, issue.1-3, pp.97-112, 2002.
DOI : 10.1016/S0168-1699(02)00113-8

W. T. Crooks and D. J. Archer, SAR observations of dry land moisture?towards monitoring outbreak, South Africa ?Proceedings of IEEE International Symposium on Geosciences and Remote Sensing2002, pp.1994-1996, 2002.

C. Vittoria and V. Alessandro, Epidemic modeling in metapopulation sysyems with hetergeneous coupling pattern: Theory and simulations, Journal of Theoretical Biology, vol.251, pp.450-467, 2008.

F. Ball, D. Mollison, and T. G. Scalia, Epidemics with two levels of mixing, The Annals of Applied Probability, vol.7, issue.1, pp.46-89, 1997.
DOI : 10.1214/aoap/1034625252

B. Barthelemy, M. Bartar, and A. Vespignani, Dynamical patterns of epidemic outbreaks in complex heterogeneous networks, Journal of Theoretical Biology, vol.235, issue.2, pp.275-288, 2005.
DOI : 10.1016/j.jtbi.2005.01.011
URL : https://hal.archives-ouvertes.fr/hal-00014384

B. S. Cooper, R. J. Pitman, W. J. Edmunds, and N. J. Gay, Delaying the International Spread of Pandemic Influenza, PLoS Medicine, vol.270, issue.6, p.12, 2006.
DOI : 10.1371/journal.pmed.0030212.sd001

V. Colizza, R. Pastor-satorras, and A. Vespignani, Reaction???diffusion processes and metapopulation models in heterogeneous??networks, Nature Physics, vol.6, issue.4, pp.276-282, 2007.
DOI : 10.1103/PhysRevE.71.027103

E. J. Newman, S. H. Strogatz, and D. J. Watts, Random graphs with arbitrary degree distributions and their applications, Physical Review E, vol.64, issue.2, p.118, 2001.
DOI : 10.1103/PhysRevE.64.026118

O. Bodin and J. Norberg, A Network Approach for Analyzing Spatially Structured Populations in Fragmented Landscape, Landscape Ecology, vol.14, issue.1, pp.31-44, 2007.
DOI : 10.1007/s10980-006-9015-0

R. Albert and A. L. Barabasi, Statistical mechanics of complex networks, Reviews of Modern Physics, vol.74, issue.1, pp.47-91, 2002.
DOI : 10.1103/RevModPhys.74.47