Geometric topology recent developments : lectures given on the 1st session of the Centro internazionale matematico estivo (C.I.M.E.) held at Montecatini Terme, Italy, June 4-12, 1990 / J. Cheeger ... [et al.] ; editors, P. de Bartolomeis, F. Tricerri. - Cheeger, Jeff; De Bartolomeis, P. (Paolo); Tricerri, F. (Franco), 1947- (Lecture notes in mathematics (Springer-Verlag) ;, 1991)