%0 Journal Article
%A M. F. Kulagina
%T Characteristic singular equations in the case of a countable set of contours with several condensation points
%J Trudy seminara po kraevym zadačam
%D 1974
%P 138-143
%V 11
%N 11
%I mathdoc
%U http://geodesic.mathdoc.fr/item/KUKZ_1974_11_11_a17/
%G ru
%F KUKZ_1974_11_11_a17