%0 Journal Article
%A Nguyen Khanh Toan
%T Some new properties of surfaces of the second order in elliptic space
%J Izvestiâ vysših učebnyh zavedenij. Matematika
%D 1959
%P 136-144
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/IVM_1959_1_a12/
%G ru
%F IVM_1959_1_a12