%0 Journal Article
%A V. G. Boltyanskii
%T Basic concepts of homology and obstruction theory
%J Trudy Matematicheskogo Instituta imeni V.A. Steklova
%D 1966
%P 113-132
%V 21
%N 5
%I mathdoc
%U http://geodesic.mathdoc.fr/item/RM_1966_21_5_a2/
%G en
%F RM_1966_21_5_a2