Harppel, Dieter books & textbook
Tilting in Abelian Categories and Quasitilted Algebras (Memoirs of the American Mathematical Society)
Happel, Dieter Reiten, Idun Smalo, Sverre O. Harppel, Dieter Smal, Sverre O.
Amer Mathematical Society /1996T Paperback / 88 Pages
isbn-10: 0821804448 / isbn-13: 9780821804445