Paithankar, Y. G & Bhide, S. R. Fundamentals of power system protection / - 2nd ed. - Delhi : PHI Learning pvt. ltd. , c2010 - xii, 366 p. : ill. ; 24 cm. includes index. ISBN: 9788120341234 LC Class. No.: D4480 Dewey Class. No.: 621.317 / PAI