Shaposhnikova, V.V., and S.N. Salazkin. “CONDENSATION TERNARY CO(POLYARYLENE ETHER KETONES): SYNTHESIS AND PROPERTIES”. Rossiiskii Khimicheskii Zhurnal (Russian Chemistry Journal) 65, no. 3 (September 17, 2021): 72-78. Accessed August 16, 2025. https://rcj-isuct.ru/article/view/3819.