%0 Journal Article
%A A. V. Guminskaya
%A P. P. Zabreiko
%T On Hopf's theorems for relative rotation
%J Trudy Instituta matematiki
%D 2007
%P 33-46
%V 15
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/TIMB_2007_15_1_a4/
%G ru
%F TIMB_2007_15_1_a4