Possibilities and limitations of immersive free-hand expression: a case study with professional artists. - Wille Mäkelä; Markku Reunanen; Tapio Takala (ACM Multimedia, 2004)

Näprä - Affordable Fingertip Tracking with Ultrasound. - Markku Reunanen; Karri T. Palovuori; Tommi Ilmonen; Wille Mäkelä (IPT/EGVE, 2005)

Upponurkka: An Inexpensive Immersive Display for Public VR Installations. - Tapio Lokki; Tommi Ilmonen; Wille Mäkelä; Tapio Takala (VR, 2006)