%0 Journal Article
%A R. M. Geidel'man
%T Conformal theory of two-parameter families of spheres
%J Doklady Akademii Nauk
%D 1960
%P 753-756
%V 134
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1960_134_4_a2/
%G ru
%F DAN_1960_134_4_a2