ISBN 3540071598 books & textbook
Trivial Extensions of Abelian Categories: Homological Algebra of Trivial Extensions of Abelian Catergories with Applications to Ring Theory (Lecture Notes in Mathematics, 456)
Fossum, Robert M. Griffith, Phillip A. Reiten, Idun
Springer /1975-05-20 Paperback / 140 Pages
isbn-10: 3540071598 / isbn-13: 9783540071594