WASZCZUK, T., ŁYPACEWICZ, G. and SOMER, J. (2015) “Preliminary ultrasonographic studies on an electronic system for focusing an ultrasonic beam”, Archives of Acoustics, 14(1-2), pp. 111–121. Available at: https://acoustics3.ippt.pan.pl/index.php/aa/article/view/3040 (Accessed: 25 April 2025).