Electrical apparatus for explosive gas atmospheres - Part 4: Method of test for ignition temperature - First supplement. *Note.-This supplement applies also to the second edition of 1975— 5 стр.
Explosive atmospheres - Part 38: Equipment and components in explosive atmospheres in underground mines (ISO/IEC 80079-38:2016); German version EN ISO/IEC 80079-38:2016— 70 стр.