Trigg, George L. Encyclopedia of Applied Physics Volume 23/ Index Unified Field Theories to Zeeman and Stark Effects Index / edited by George L. Trigg - Weinheim, Germany. Wiley-Vch Verlag GmbH & Co. KGaA: 2004. - 367p. ISBN: 3527404783 Dewey Class. No.: 621.03 / TRI/E