Nguyen, Hoang, Anh Nguyen, and Ly Tran. “Extension for Contract Performance under the CISG 1980 and Implications for Vietnamese Businesses”. Science & Technology Development Journal: Economics- Law & Management 6, no. 2 (June 18, 2022): 2689-2700. Accessed February 26, 2024. http://stdjelm.scienceandtechnology.com.vn/index.php/stdjelm/article/view/944.