Magnus, W Combinatorial group theory presentations of groups in terms of generators and relations W. Magnus, A. Karrass and D. Solitar - 2nd rev. ed. - New York Dover Publications 1976 - x, 444p. ISBN: 0-486-63281-4 Subjects--Topical Terms: CalculusNielsen Transformation Universal Decimal Class. No.: 519.4 / MAG