%0 Journal Article %A S. Sh. Shushbaev %T On the Rankin--Sobolev problem of the multidimensional zeta function (estimate of the origin of the ray of extremality of the principal perfect form) %J Informatics and Automation %D 1980 %P 232-235 %V 152 %I mathdoc %U http://geodesic.mathdoc.fr/item/TRSPY_1980_152_a15/ %G ru %F TRSPY_1980_152_a15