Mutala, Gideon Nzioki. “Modeling Natural Frequencies of Vibration of Three Dimensional Frames under Two Dimensional Loading”. Asian Journal of Applied Science and Engineering 5, no. 1 (April 10, 2016): 71–92. Accessed November 7, 2024. https://ajase.codexcafe.net/index.php/ajase/article/view/67.