%0 Journal Article
%T The torsion-freeness of ext
%A U. Albrecht
%A S. Friedenberg
%A L. Strungmann
%J International Journal of Algebra
%D 2012
%I 
%U http://www.m-hikari.com/ija/ija-2012/ija-9-12-2012/struengmannIJA9-12-2012.pdf