%0 Journal Article
%A A. D. Aleksandrov
%A P. S. Aleksandrov
%A A. V. Pogorelov
%A È. G. Poznyak
%T Nikolai Vladimirovich Efimov (on the occasion of his sixtieth birthday)
%J Trudy Matematicheskogo Instituta imeni V.A. Steklova
%D 1971
%P 205-210
%V 26
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/RM_1971_26_1_a5/
%G en
%F RM_1971_26_1_a5