IEC 60050-141:2004
International Electrotechnical Vocabulary Part 141: Polyphase systems and circuits (Edition 1.0; Replaces IEC 60050-131A: 1982)
Vocabulaire Electrotechnique International Partie 141: Systèmes et circuits polyphasés (Edition 1.0; Replaces IEC 60050-131A: 1982)