“CONSTRUCTION OF AN ULTRASONIC TOMOGRAPH FOR ANALYSIS OF TECHNOLOGICAL PROCESSES IN THE FIELD OF REFLECTION AND TRANSMISSION WAVES”. Informatyka, Automatyka, Pomiary W Gospodarce I Ochronie Środowiska, vol. 9, no. 4, Dec. 2019, pp. 43-47, https://doi.org/10.35784/iapgos.569.