TY  - BOOK
AU  - Warrington, A. R. Van C.
TI  - PROTECTIVE RELAYS
U1  - 621.317 
PY  - 1974///
CY  - London
PB  - Chapman And Hall
KW  - Electric Relays
N1  - Ref. : V. 1., V. 2. P. 425-430
ER  -