Letters prices in Europe [documento electrónico] : an up-to-date survey / ed. Alexander Edenhofer
Letter prices in Europe [documento eletrónico] : up-to-date international letter price survey / ed. Alexander Rometsch-Steinmann, Regine Stöldt
Lessons in price regulation from international posts / United States Postal Services
Main developments in the postal sector (2013-2016) [documento eletrónico] / European Commission
Main developments in the postal sector (2017-2021) [documento eletrónico] / Mindaugas Cerpickis...[et al.]
ERGP report on the future needs of the USO [documento eletrónico] / European Regulators Group for Postal Services
ERGP report on core indicators for monitoring the European postal market [documento eletrónico] : 2024 / European Regulators Group for Postal Services