Acta nº 1119 do Conselho de Administração das Companhias Reunidas Gás e Electricidade
Transmission lines : design, construction and performance / Fred C. Deweese
Distribution of electricity / W. T. Henley's Telegraph Work Co.
Accessoires pour lignes suspendues
Transmission line hardware drop forged for strength
L' influence des oscillations de réseaux sur le dispositif de protection des lignes : CH-ES 35-30.15F