Annual economic report 2014 [documento eletrónico] / European Telecommunication Network Operators'Association
Annual economic report 2015 [documento eletrónico] / European Telecommunications Network Operators' Association
Annual economic report 2016 [documento eletrónico] / European Telecommunications Network Operators' Association
Annual economic report 2017 [documento eletrónico] / European Telecommunications Network Operators' Association
The state of digital communications 2019 [documento eletrónico] : ideas, facts and figures on the sector / European Telecommunications Network Operators' Association
The state of digital communications 2020 [documento eletrónico] / European Telecommunications Network Operators' Association