Ismail, M.R. and Jweeg, M.J. (2017) “Natural Frequencies of Multi-Irregular Span Beams under Elastic Supports by Modal Analysis Method”, Al-Nahrain Journal for Engineering Sciences, 18(2), pp. 284–293. Available at: https://nahje.com/index.php/main/article/view/190 (Accessed: 23 November 2024).