A. Grigaliūnas, R. Veteikis, K. Lukoševičius, and K. Muckus, “Theoretical Aspects of Measuring Input Resistance in Syncytial Tissue by Means of Double-Barreled Electrode”, ELEKTRON ELEKTROTECH, vol. 94, no. 6, pp. 93–98, Jul. 2009, doi: 10.5755/j02.eie.10115.