[1]
J. HOŁA, “Determination of initiating and critical stress levels in compressed plain and high-strength concrete by acoustic methods”, Arch. Acoust., vol. 25, no. 1, pp. 57–65, Mar. 2000, Accessed: Apr. 22, 2026. [Online]. Available: http://acoustics.ippt.gov.pl/index.php/aa/article/view/352