Combined annual report 2018 [documento eletrónico] : digital transformation / A1 Telekom Austria Group
Annual report 2018 [documento electrónico] / Leading European Entertainment Network
Integrated annual report 2018 [documento electrónico] : consolidated and separate financial statements consolidated and separate anual activities report independente auditor's report / VIVACOM
The operators and their future [documento eletrónico] : the state of play and emerging business models / Organisation for Economic co-Operation and Development