%0 Journal Article %A A. K. Cherkashin %T Polysystem Modelling of Geographical Processes and Phenomena in Nature and Society %J Mathematical modelling of natural phenomena %D 2009 %P 4-20 %V 4 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.1051/mmnp/20094501/ %R 10.1051/mmnp/20094501 %G en %F MMNP_2009_4_5_a1