Performance of computer installations : evaluation and management : proceedings of the International Conference on the Performance of Computer Installations, ICPCI 78, June 22-23, 1978, Gardone Riviera, Lake Garda, Italy - Ferrari, Domenico, 1940- (North-Holland Pub. Co. ; sole distributors for the U.S.A. and Canada, Elsevier North-Holland, 1978)