“Comparative Study of Vibration Analysis in Rotary Shafts Between Rayleigh’s and Dunkerley’s Methods”. Al-Khwarizmi Engineering Journal 18, no. 2 (June 16, 2022): 29–42. Accessed April 27, 2024. https://alkej.uobaghdad.edu.iq/index.php/alkej/article/view/778.