The ESPRIT Project CAFE - High Security Digital Payment Systems. - Jean-Paul Boly; Antoon Bosselaers; Ronald Cramer; Rolf Michelsen; Stig Fr. Mjølsnes; Frank Muller; Torben P. Pedersen; Birgit Pfitzmann; Peter de Rooij; Berry Schoenmakers; Matthias Schunter; Luc Vallée; et al. (ESORICS, 1994)

Open Transnational System for Digital Currency Payments. - Stig Fr. Mjølsnes; Rolf Michelsen (HICSS (5), 1997)

Search engines and Web dynamics. - Knut Magne Risvik; Rolf Michelsen (Comput. Networks, 2002)