
1.		À volta dos Volts (Editorial) / Hermínio Duarte Ramos Autor: Ramos, Hermínio Duarte Data: Fev. 1995
2.		C.S.STERN. Uma unidade portuguesa ao serviço da Industria portuguesa Data: [s.d.]
3.		Proposta da Azevedo & Pessi, Ldª de relés temporizadas datada de 26/07/1971 para CEAL / Azevedo & Pessi, Ldª
4.		Electronic measuring and microwave instruments / Philips
5.		Ernest Tesch. Timing equipment (electrically-operated) Data: [s.d.]
6.		AEG. Measurements section - Portable indicating instruments / Allgemeine Elextricitäts Gesellschaft
7.		High voltage laboratory technique / J. D. Craggs, J. M. Meek Autor: Craggs, J. D.
8.		Questions and answers about capacitors : comments about fifty common questions asked by utilities about the selection and application of power capacitors / P. E. Hendrickson Autor: Hendrickson, P. E.
9.		Portable instruments / Roller-Smith
10.		Electrical laboratory apparatus and educational service, for colleges and technical schools / General Electric
11.		Schalttafel-messinstrumente : Hand liste 1932 teil I / Siemens Halske
12.		Neue schaltwagenformen / Allgemeine Elextricitäts Gesellschaft Autor: Gasiorowki, E.