IEC 60044-8 (2002), Instrument transformers - Part 8: Electric current transformers
IEC 61850-9-2 (2004), Communication networks and systems in substations - Part 9-2: Specific communication service mapping (SCSM - Sampled values over ISO/IEC 8802-3.
UCA International Users Group, ”Implementation guideline for digital interface to instrument transformers using IEC 61850-9-2”, http://www.ucainternational.org, 2004.