L. Svilainis, V. Dumbrava, S. Kitov, A. Aleksandrovas, P. Tervydis, and D. Liaukonis, “Electronics for Ultrasonic Imaging System”, ELEKTRON ELEKTROTECH, vol. 20, no. 7, pp. 51–56, Sep. 2014, doi: 10.5755/j01.eee.20.7.8024.