Rao, T S Madhava Power system protection : static relays with microprocessor applications / T S Madhava Rao - 2nd ed. - India Tata McGraw-Hill 1989 - 723 p. ISBN: 9780074603079 Subjects--Topical Terms: Electric power systems --ProtectionStatic relaysᅠ Dewey Class. No.: 621.317 MAD-T