Ismail, M.R. and Jweeg, M.J. (2017) “Natural Frequencies of Multi-Irregular Span Beams under Elastic Supports by Modal Analysis Method”, Nahrain University College of Engineering Journal, 18(2), pp. 284–293. Available at: https://oldjournal.eng.nahrainuniv.edu.iq/index.php/main/article/view/190 (Accessed: 23 December 2024).