Popescu, N. Abelian categories with application to rings and modules - London : Academic Press, 1973 - 467 p. - L.M.S. monographs ; 3 . - L.M.S. monographs ; 3 . BibliografĂa: pp. 451-459. LCCN: 52302 Subjects--Topical Terms: Grupos--TeorĂa de los. Dewey Class. No.: 512.86 / P6