Postal services [documento electrónico] : apertures of private letter boxes and letter plates: requirements and test methods: EN 13724: November 2002 / European Committee for Standardization
Postal services [documento electrónico] : quality of service: measurement of the transit time of end-to-end services for single piece priority mail and first class mail: EN 13850: Mai 2002 / European Committee for Standardization
Postal services [documento electrónico] : quality of service: measurement of loss of registered mail and other types of postal service using a track and trace system: EN 14137: September 2003 / European Committee for Standardization
Postal services [documento electrónico] : address databases: part 1: components of postal addresses: EN 14142-1: February 2003 / European Committee for Standardization