
1.		Sistemas de protecção eléctrica / José Matias Autor: Matias, José
2.		Extra high voltage transmission in sweden / Lars Berglund...[et al] Autor: Berglund, Lars
3.		Connection and installation parts for combiflex modular system : catalogue RK92-10E
4.		Switchgear and control handbook / Robert W. Smeaton Autor: Smeaton, Robert W.
5.		Protective Relays : their theory and practice / A.R. van C. Warrington Autor: Warrington, Albert Russell van Cortland
6.		Remote instrumentation and control of mining operations / English Electric
7.		The protection of domestic circuits / English Electric Company, Ldª
8.		Modern power station practice / Central Electricity Generation Board
9.		Switched mho phase fault distance protection scheme, type EEM3V / English Electric Company, Ldª
10.		The application of distance relays types xcg and ycg for the protection of overhead lines / English Electric Company, Ldª
11.		Electric fuses / H. Läpple Autor: Läpple, H.
12.		Journées d' information sur la protection des réseaux 1950 / Brown, Boveri