PAJEWSKI W, KIEŁCZYŃSKI P, SZALEWSKI M. Radiation of piezoelectric rings into the air through cylindrical waveguides. Arch. Acoust. [Internet]. 2014 Jan. 1 [cited 2026 Jan. 17];20(4):361-72. Available from: https://acoustics.ippt.gov.pl/index.php/aa/article/view/1276