1.		Electrical engineer's pocket-book : a hand-book of useful data for electricians and electrical engineers / Horatio A. Foster Autor: Foster, Horatio A., Consulting Engineer Data Publicação: 1910
2.		Leçons d'électrotechnique générale : professes a l'école supérieure d'électricité / P. Janet Autor: Janet, P. Data Publicação: 1910