Hewitson, Les. Practical power system protection [electronic resource] / Les Hewitson, Mark Brown, Ben Ramesh. - 4th ed. - Oxford ; Burlington, MA : Elsevier/Newnes, 2004. - x, 227 p. : ill. Includes index. ISBN: 9780080455983 Subjects--Topical Terms: Electric power systems.Electrical engineering. Index Terms--Genre/Form: Electronic books. LC Class. No.: TK1001 / .H49 2004