Nasar, Syed A. Schaum's outline of theory and problems of electric machines and electromechanics Syed A. Nasar - 2. ed. - New York : McGraw-Hill, cop. 1998 - vi, 218 s. : ill. - Schaum's outline series . ISBN: 0-07-045994-0 Dewey Class. No.: 621.31042076