Invariant theory proceedings of the 1st 1982 session of the Centro internazionale matematico estivo (C.I.M.E.) held at Montecatini, Italy, June 10-18, 1982 / edited by F. Gherardelli. - Gherardelli, F. (Francesco), 1925- (Lecture notes in mathematics (Springer-Verlag) ;, 1983)