%0 Journal Article
%A A. V. Kazantsev
%T Bifurcations and new uniqueness criteria for the critical points of hyperbolic derivatives
%J Učënye zapiski Kazanskogo universiteta. Seriâ Fiziko-matematičeskie nauki
%D 2011
%P 180-194
%V 153
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/UZKU_2011_153_1_a14/
%G ru
%F UZKU_2011_153_1_a14