%0 Journal Article
%A S. V. Matveev
%T Structure of the second homotopy group of the union of two spaces
%J Zapiski Nauchnykh Seminarov POMI
%D 1985
%P 147-155
%V 143
%I mathdoc
%U http://geodesic.mathdoc.fr/item/ZNSL_1985_143_a7/
%G ru
%F ZNSL_1985_143_a7