Broadband Internet access cost (BIAC) [documento electrónico] : first half of 2008 prices as at 1-15 April 2008: final report / ed. Van Dijk-Management Consultants
Broadband Internet access cost (BIAC) 2013 [documento eletrónico] : prices as at 1-15 february 2013; : final report / Van Dijk Management Consultants
Broadband Internet access cost (BIAC) 2014 [documento eletrónico] : prices as of february 2014 / Van Dijk Management Consultants