Comparison of Mobile and Fixed Use of SmartLibrary. - Markus Aittola; Pekka Parhi; Maria Vieruaho; Timo Ojala (Mobile HCI, 2004)

Mobile kärpät: a case study in wireless personal area networking. - Timo Ojala; Jani Korhonen; Tiia Sutinen; Pekka Parhi; Lauri Aalto (MUM, 2004)

Target size study for one-handed thumb use on small touchscreen devices. - Pekka Parhi; Amy K. Karlson; Benjamin B. Bederson (Mobile HCI, 2006)