Fossum, Robert M. <br/><br/>
Trivial extensions of abelian categories : homological algebra of trivial extensions of abelian categories with application to ring theory 
Robert M. Fossum, Philip A. Griffith and Idun Reiten 
 - Berlin  Springer-Verlag  1975 
 - xi,122p.;  24cm.- 
 - Lecture notes in mathematics 456 .
<br/><br/><label>Dewey Class. No.: </label>512.55  / FOS