e-Commerce report 2023 [documento eletrónico] / Correios de Portugal
2023 European e-commerce report [documento eletrónico] / Sara Lone, Jesse Weltevreden, Aishwarya Luharuwala
State of the postal sector 2023 [documento eletrónico] : a hyper-collaborative path to postal development / Universal Postal Union
ERGP report on the future needs of the USO [documento eletrónico] / European Regulators Group for Postal Services