%0 Journal Article
%A V. G. Il'ichev
%T Fragment of a mathematical theory of competition among biological species in a variable environment
%J Differencialʹnye uravneniâ
%D 1991
%P 437-447
%V 27
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1991_27_3_a7/
%G ru
%F DE_1991_27_3_a7