Postal economic outlook 2018 [documento eletrónico] : key transformations affecting the sector / José Anson, Fernão De Borba and Lukas Piotrowski
ERGP report on the boundaries around postal services in order to ensure NRAs clarity in the performance of their tasks [documento eletrónico] / European Regulators Group for Postal Services
e-Commerce report [documento eletrónico] : CTT 2018 / ed. Correios de Portugal. Direção de E-Commerce
Annual Report 2017 [documento electrónico] : Commitment / Deutsche Post DHL Group