Marde sic, S. 1927- Shape theory : the inverse system approach / S. Marde si c, J. Segal. - Amsterdam : North-Holland, 1982. - xv, 378 p. : ill. ; 23 cm. - North-Holland Mathematical Library v.26 . Bibliography: p341-371. - Includes index ISBN: 0444862862 Subjects--Topical Terms: Shape theory (Topology).Homotopy theory.