Wireless Internet access based on GPRS. - Roger Kalden; Ingo Meirick; Michael Meyer (IEEE Wirel. Commun., 2000)

Searching for Self-Similarity in GPRS. - Roger Kalden; Sami Ibrahim (PAM, 2004)

Searching for mobile mice and elephants in GPRS networks. - Roger Kalden; Hannes Ekström (ACM SIGMOBILE Mob. Comput. Commun. Rev., 2004)

Measuring and Modeling of Application Flow Length in Commercial GPRS Networks. - Roger Kalden; Boudewijn R. Haverkort (QEST, 2006)