Fundamental Characterization of Conductive Intracardiac Communication for Leadless Multisite Pacemaker Systems - Lukas Bereuter; Timon Kuenzle; Thomas Niederhauser; Martin Kucera; Dominik Obrist; Tobias Reichlin; Hildegard Tanner; Andreas Haeberlin (IEEE Trans. Biomed. Circuits Syst., 2019)