Contextual research for technological innovation - satisfying user needs in the design of mobile communication devices. - Satu Ruuska; Kaisa Väänänen-Vainio-Mattila (HCI (2), 1999)

Mobile communication devices for international use - Exploring cultural diversity through contextual inquiry. - Satu Ruuska (IWIPS, 1999)

Design: Designing mobile phones and communicators for consumer needs at Nokia. - Kaisa Väänänen-Vainio-Mattila; Satu Ruuska (Interactions, 1999)

Future mobile device user interfaces. - Satu Ruuska; Kaisa Väänänen-Vainio-Mattila; Matthias Schneider-Hufschmidt; Bruno von Niman (CHI Extended Abstracts, 2000)