2011DIN EN 61881-1:2011 Railway applications - Rolling stock equipment - Capacitors for power electronics - Part 1: Paper/plastic film capacitors (IEC 61881-1:2010); German version EN 61881-1:2011
2000DIN EN 61881:2000 Railway applications - Rolling stock equipment - Capacitors for power electronics (IEC 61881:1999); German version EN 61881:1999