%0 Journal Article
%A A. D. Morozov
%T On the question of the complete qualitative investigation of Duffing's equation
%J Žurnal vyčislitelʹnoj matematiki i matematičeskoj fiziki
%D 1973
%P 1134-1152
%V 13
%N 5
%I mathdoc
%U http://geodesic.mathdoc.fr/item/ZVMMF_1973_13_5_a3/
%G ru
%F ZVMMF_1973_13_5_a3