Methods of homological algebra / Sergei I. Gelfand, Yuri I. Manin. Metody gomologicheskoĭ algebry. English Gelʹfand, S. I. (Sergeĭ Izrailevich) Manin, I︠U︡. I. Algebra, Homological. QA169 .G4513 1996 512.55 20 GEM Includes bibliographical references (p. [357]-367) and index. Berlin ; New York : Springer, c1996. c1996. 1996 Text xviii, 372 p. : eng eng rus