Yusupov, Muzafar, Abdulakhat Djalilov, and Sharifjon Kiyomov. “678 Kimyo Va Kimyoviy Texnologiyalar: Synthesis of a Non-Isocyanate Urethane Oligomer Based on Phthalic Anhydride”. Scientific and Technical Journal of Namangan Institute of Engineering and Technology 8, no. 2 (June 30, 2023): 107–113. Accessed July 6, 2024. http://niet.uz/index.php/nj/article/view/158.