Bratychak, M.M., O.P. Ivashkiv, and O.T. Astakhova. “Chemical Modification of ED-20 Epoxy Oligomer by 1,4-Butanediol”. Reports of the National Academy of Sciences of Ukraine, no. 8 (March 1, 2025): 97–102. Accessed May 10, 2026. https://nasu-periodicals.org.ua/index.php/dp/article/view/16621.