Ruangbunsuk, S., S. Hanklar, and N. Niyomthai. “Strength Design and Analysis of a Nose Landing Gear Door for L‐39 Jet Trainer Aircraft Rib Front Hinge Assembly”. Journal of Research and Applications in Mechanical Engineering 2, no. 1 (October 7, 2018): 5. Accessed May 19, 2024. https://ph01.tci-thaijo.org/index.php/jrame/article/view/149422.