TY  - BOOK
AU  - Singh, L. P.
TI  - Digital protection: protective relaying from electromechanical to microprocessor 
SN  - 0470234369
U1  - 621.3 
PY  - 1994///
CY  - New York
PB  - John Wiley & Sons
KW  - Digital protection
KW  - Electromechanical
N1  - Includes references & index
ER  -