INTERNATIONAL ELECTROTECHNICAL COMMISSION (IEC). Withdrawn IEC 60364-5-53:2001+AMD1:2002, Electrical installations of buildings - Part 5-53: Selection and erection of electrical equipment - Isolation, switching and control. 75 s. Edition 3.1, 2012-06. ISBN 2-8318-6365-1. Dostupné z: https://webstore.iec.ch/publication/1881