TY  - GEN
AU  - Warrington, A.R. van C.
TI  - Protective relays : their theory and practice
CY  - London
PB  - Chapman & Hall
N1  - 1968-69 : 013688 - v.1; 013689 - v.2; 020498 - v.1 (484 p.; 380 p.); diags
ER  -