Magnetic measurements of cardiac mechanical activity. - Roman Maniewski; Toivo Katila; Torsti Poutanen; Penitti Siltanen; Timo Varpula; John P. Wikswo Jr. (IEEE Trans. Biomed. Eng., 1988)

Technical Solutions for Automotive Intermodulation Radar for Detecting Vulnerable Road Users. - Ville Viikari; Mikko Kantanen; Timo Varpula; Antti Lamminen; Ari T. Alastalo; Tomi Mattila; Heikki Seppä; Pekka Pursula; Jone Saebboe; Shi Cheng; Mustafa Al-Nuaimi; Paul Hallbjörner; et al. (VTC Spring, 2009)

Road-Condition Recognition Using 24-GHz Automotive Radar. - Ville Viikari; Timo Varpula; Mikko Kantanen (IEEE Trans. Intell. Transp. Syst., 2009)