TSB Collective-letter 4/TSAG : Geneva, 14 December 1998: Meeting of the Telecommunication Standardization Advisory Group (TSAG): Geneva, 12-16 April 1999 / ITU-T
TSB Collective-letter 8/3 : 3 March 1999: Meetings of study group 3 and its working: Parties 1/3, 2/3, 3/3: Geneva, 2-11 June 1999 / ITU-T
TSB Collective-letter 9/3 : 25 August 1999: Meeting of study group 3 and its working - Parties 1/3, 2/3 3/3: Geneva, 13-17 December 1999 / ITU-T
Liste des adresses, des chefs et des fonctionnaires supérieurs des Administrations postales, du Bureau international et des Unions restreintes / Bureau International [de l'] Union Postale Universelle