Nguyen, Hao, Trung Nguyen, Trung Nguyen, and Hoa Vu. 2017. “Forming Limit Curve Determination of AA6061-T6 Aluminum Alloy Sheet”. Science and Technology Development Journal 20 (K2), 51-60. https://doi.org/https://doi.org/10.32508/stdj.v20iK2.448.