"The authors' presentation is original, condensed and carefully written. Even in case the authors' would be right with their claim that the results "are probably well known" it will be an important help for a person who will become familiar with these details to find them in such a compact and clearly presented way." Zentralblatt für Mathematik
"As their book is primarily aimed at graduate students in homological algebra, the authors have made any effort to keep the text reasonably self-contained and detailed. The outcome is a comprehensive textbook on relative homological algebra at its present state of art." Zentralblatt für Mathematik (review of the first edition)
"[...] in the reviewer's opinion it is an elegant introduction to homological methods towards applications in ring theory." Zentralblatt für Mathematik
"[...] in the reviewer's opinion it is an elegant introduction to homological methods towards applications in ring theory." Zentralblatt für Mathematik








