Walter A. Elmore (ABB Power T&D Company, Inc., Coral Springs, Florida, USA)
Although this work is aimed at an electrical engineering audience, the language is clear, the math isn't daunting, and the many diagrams are a great aid to understanding. Elmore's book will continue to be a bible for the relay engineer . - Electrical Apparatus, Feb. 2004 Elmore has been nationally recognized for decades as an authority in relay technology. [T]he language is clear, the math isn't daunting, and the many diagrams are a great aid to understanding. Elmore's book will continue to be a bible for the relay engineer, as the earlier Westinghouse publication was for so many years. - Electrical Apparatus, Feb. 2004 provide[s] considerable insight to the individual who wishes to explore this fascinating field. IEEE Power Engineering Review