DIN EN 60793-1-20:2002 Optical fibres - Part 1-20: Measurement methods and test procedures; Fibre geometry (IEC 60793-1-20:2001); German version EN 60793-1-20:2002
2017DIN EN 60793-1-20:2017 Optical fibres - Part 1-20: Measurement methods and test procedures - Fibre geometry (IEC 60793-1-20:2014); German version EN 60793-1-20:2014
2002DIN EN 60793-1-46:2002 Optical fibres - Part 1-46: Measurement methods and test procedures; Monitoring of changes in optical transmittance (IEC 60793-1-46:2001); German version EN 60793-1-46:2002