ZAKRZEWSKI, T. “Vibroacoustic Monitoring of Bearing Points Failures in the Driving System of the Mining Main Ventilation Fans”. Archives of Acoustics 18, no. 1 (March 31, 1993): 47–66. Accessed April 18, 2026. http://acoustics.ippt.gov.pl/index.php/aa/article/view/1130.