%0 Journal Article
%A Fred Richman
%A Elbert A. Walker
%T Cotorsion Free, an Example of Relative Injectivity.
%J Mathematische Zeitschrift
%D 1967
%P 115-119
%V 102
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MZ_1967__102_170863/
%F MZ_1967__102_170863