LST EN 62439-1-2010 Industrial communication networks - High availability automation networks - Part 1: General concepts and calculation methods (IEC 62439-1:2010)
2013LST EN 62439-3-2013 Industrial communication networks - High availability automation networks -- Part 3: Parallel Redundancy Protocol (PRP) and High-availability Seamless Redundancy (HSR)
2010LST EN 62439-3-2010 Industrial communication networks - High availability automation networks - Part 3: Parallel Redundancy Protocol (PRP) and High availability Seamless Redundancy (HSR) (IEC 62439-3:2010)
2009LST EN 736-2-2009 Valves - Terminology - Part 2: Definition of components of valves