Mobile connect for cross-border digital services [documento eletrónico] : lessons learned from the eIDAS pilot / ed. GSMA
The mobile economy Europe 2018 [documento eletrónico] / ed. GSMA
The mobile economy Europe 2021 [documento eletrónico] / ed. GSMA
The mobile economy Europe 2022 [documento eletrónico] / ed. GSMA
The mobile economy Europe 2023 [documento eletrónico] / ed. GSMA