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Message * Ii Mezhdunarodnai︠a︡ Konferent︠s︡ii︠a︡ Po Matematicheskomu Modelirovanii︠u︡ Tezisy Dokladov, 28 Ii︠u︡ni︠a︡ - 2 Ii︠u︡li︠a︡ 1997 G. - 5861340358 - 9785861340359