Kaanel ka: Electrical safety in low voltage distribution systems up to 1000 V a.c. and 1500 V d.c. Equipment for testing, measuring or monitoring of protective measures. Part 8, Insulation monitoring devicesfor IT systems. (IEC 61557-8:2007 + corrigendum May 2007). Bibliogr. lk. 24. Avaldatud eesti keeles: aprill 2009. Osa teksti inglise ja prantsuse keeles