%0 Journal Article
%A S. A. Popov
%T Almost smooth two-dimensional submanyfolds of four-dimensional manyfolds and some link invariants
%J Zapiski Nauchnykh Seminarov POMI
%D 1973
%P 146-154
%V 36
%U http://geodesic.mathdoc.fr/item/ZNSL_1973_36_a6/
%G ru
%F ZNSL_1973_36_a6