El-Sharkawi, Mohamed A. Electric energy : an introduction / Mohamed A. El-Sharkawi. - Boca Raton, Fla. : CRC Press, 2005. - xvi, 455 p. : ill. (some col.) ; 24 cm. - Power electronics and applications series . Includes index. ISBN: 0849330785 Subjects--Topical Terms: Electric power systems.Power electronics.