@book{10557,
	author = {Tachikawa, Hiroyuki and Ringel, Claus Michael; notes by -},
	title = {Quasi-frobeniue rings and generalizations; QF-3 and QF-1 rings},
	publisher = {Springer-Verlag},
	year = {1973},
	series = {Lecture notes in Mathematics},
	address = {Berlin},
	note = {"Notes by Claus Michael Ringel"}
}