%0 Journal Article
%A V. P. Tret'yakov
%T On the theory of formal multiplication of double series
%J Izvestiâ vysših učebnyh zavedenij. Matematika
%D 1961
%P 78-85
%N 5
%I mathdoc
%U http://geodesic.mathdoc.fr/item/IVM_1961_5_a9/
%G ru
%F IVM_1961_5_a9