A Comparison of Digital Subscriber Line Transmission Systems Employing Different Line Codes. - Alberto Brosio; Umberto De Julio; Vincenzo Lazzari; Renzo Ravaglia; Adler Tofanelli (IEEE Trans. Commun., 1981)

Users, services and traffic modelling for broadband telecommunications planning. - Mario Capurro; Renzo Ravaglia; Dino Giuli (Eur. Trans. Telecommun., 1991)