%0 Journal Article
%A Kehrein, Achim
%T Projective objects in the category of chain complexes
%J Communications in Mathematics
%D 1999
%P 33-38
%V 7
%N 1
%U http://geodesic.mathdoc.fr/item/COMIM_1999_7_1_a2/
%G en
%F COMIM_1999_7_1_a2