13.
C.S.STERN. Uma unidade portuguesa ao serviço da Industria portuguesa
Data:
[s.d.]
14.
Acem: PMS
15.
BEI : We have the power to help you
16.
Wandel & Goltermann [catálogo] : 1988 edition
17.
Association des stations d`essais françaises d`appareillage électrique industriel à basse tension
Data:
[s.d.]
18.
Mosdorfer. Fittings and accessoires for high voltage overhead lines
19.
Legrand. catálogo 1985/86
20.
Adret. Electronic measurements for industry and research
21.
ASEA. Catalogue 1984-85
22.
AMPACT. Internally fired connection systems
23.
General Electric. Industrial lighting
24.
Footcandle [or ESI] recommendations for productivity in the office and industry / General Electric
