L. Nickelson, S. Ašmontas, V. Mališauskas, R. Martavičius, and V. Engelson, “An Electrodynamical Analysis of a Model Heart”, ELEKTRON ELEKTROTECH, vol. 63, no. 7, pp. 57–57, Aug. 2005, doi: 10.5755/j02.eie.10491.