Distance relays for three-phase power transmission lines : pamphlet RK61-203E
ACEC. 12 - Moteurs Asynchrones
Equipamento transsitorizado de telecomunicação em linhas de A.T.
ACEC. Instrumentation et régulation CHANCE : Circuits débrochables série MRH 3000
Transmission : a magazine for electric utilities
Distance protection for transmission lines : RK60 200E
Central electricity research laboratories / Central Electricity Authority
South of Scotland : electricity board
The London generation division of the Central Electricity Authority / Central Electricity Authority
Le grandi linee di transmissione d'energia : calcolazione elettrica / A. Dalla Verde