CEN/TR 14709 [documento electrónico] : postal services: quality of service: guide for the implementation of EN 13850 / European Committee for Standardization
CEN/TR 15369 [documento electrónico] : postal services: quality of service: guide for the implementation of EN 14534 measurement of the transit time of enf-to-end services for bulk mail / European Committee for Standardization
CEN/TS 15511 [documento electrónico] : postal services: quality of service: information available on postal services / European Committee for Standardization
Postal services [documento electrónico] : automatic identification of receptacles and containers: mail aggregates: CEN/TS 14441: March 2003 / European Committee for Standardization