Código de manobras da rede interligada / Companhia Portuguesa de Electricidade
Swedish pressure vessel code : Code for stress calculation of pressure vessels
Código de manobras das redes interligadas
Addenda to API-ASME code for unfired pressure vessels for petroleum liquids and gases
Code for protection againts lighting / Department of Commerce
National electrical code handbook / Arthur L. Abbott
Código para la defensa contra las descargas eléctricas atmosféricas / B. Oliver y Roman