%0 Journal Article
%A V. L. Rvachev
%T An analytic description of certain geometric objects
%J Doklady Akademii Nauk
%D 1963
%P 765-767
%V 153
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1963_153_4_a6/
%G ru
%F DAN_1963_153_4_a6