%0 Journal Article %A M. M. Postnikov %T Three-dimensional spherical forms %J Trudy Matematicheskogo Instituta imeni V.A. Steklova %D 1991 %P 114-146 %V 196 %I mathdoc %U http://geodesic.mathdoc.fr/item/TM_1991_196_a11/ %G ru %F TM_1991_196_a11