OPILSKI A. Acoustic Emission: Sources, Methods and Applications (in Polish), I. MALECKI, J. RANACHOWSKI [Eds.]. Arch. Acoust. [Internet]. 1996 Mar. 31 [cited 2026 Mar. 4];21(1):115-7. Available from: https://acoustics.ippt.gov.pl/index.php/aa/article/view/983