Spatial Inversion of Depolarization and Repolarization Waves in Body Surface Potential Mapping as Indicator of Old Myocardial Infarction. - Paula Vesterinen; Helena Hänninen; Matti Stenroos; Petri Korhonen; Terhi Husa; Ilkka Tierala; Heikki Väänänen; Lauri Toivonen (FIMH, 2005)

Time and Frequency -Based Approach to Heart Sound Segmentation and Classification. - Jarno Mäkelä; Heikki Väänänen (CinC, 2016)

Electrocardiogram Classification - a Human Expert Way. - Heikki Väänänen; Jarno Mäkelä (CinC, 2017)