Industrial communication networks - High availability automation networks - Part 1: General concepts and calculation methods (IEC 62439-1:2010/A1:2012); English version EN 62439-1:2010/A1:2012— 16 стр.
Industrial communication networks - High availability automation networks - Part 1: General concepts and calculation methods (IEC 65C/635/CDV:2010); English version EN 62439-1:2010/FprA1:2010