Bagdanavičius, N., P. Balaišis, D. Eidukas, E. Keras, and A. Valinevičius. “Features of Biotronics Systems”.
Elektronika Ir Elektrotechnika
, vol. 72, no. 8, Oct. 2006, pp. 55-60, https://eejournal.ktu.lt/index.php/elt/article/view/10789.