Thien, Nguyen Luong, Nguyen Tien The, and Tran Nguyen Quyet. “RETRACTED: Manufacturing and Evaluation of Elastic Properties of Glass Fiber Reinforced Polymers Material”. Vietnam Journal of Mechanics 41, no. 3 (September 28, 2019): 243–255. Accessed May 21, 2022. https://vjs.ac.vn/index.php/vjmech/article/view/13721.