Vortman, M.Ya., V.N. Lemeshko, and V.V. Shevchenko. “Guanidinium-Containing Oligomeric Cationic Protonic Ionic Liquid”. Reports of the National Academy of Sciences of Ukraine, no. 12 (April 24, 2024): 75–82. Accessed April 21, 2026. https://nasu-periodicals.org.ua/index.php/dp/article/view/2526.