Cutting the cost : the falling price of telecoms in Europe / Graham Louth, John Darnbrough and Michael Denmead
Telegeography 1995 : global telecommunications traffic statistics & commentary / ed. Gregory C. Staple
Telegeography 1996/97 : global telecommunications traffic statistics & commentary / ed. Gregory C. Staple
Cutting the cost : the falling price of telecoms in Europe / Graham Louth, Federico Ciccione
Telegeography 1999