%0 Journal Article
%A A. K. Kel'mans
%T The existence of a ``most complex'' problem in the class of
%J Doklady Akademii Nauk
%D 1985
%P 1299-1303
%V 282
%N 6
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1985_282_6_a2/
%G ru
%F DAN_1985_282_6_a2