%0 Journal Article
%A P. D. Andreev
%T A.\,D.~Alexandrov's problem for non-positively curved spaces in the sense of Busemann
%J Izvestiâ vysših učebnyh zavedenij. Matematika
%D 2010
%P 10-35
%N 9
%I mathdoc
%U http://geodesic.mathdoc.fr/item/IVM_2010_9_a1/
%G ru
%F IVM_2010_9_a1