Varvarin, A.M., S.I. Levytska, and V.V. Brei. “Vapor Phase Condensation of Ethyl Lactate into Lactide over SnO2/SiO2 Catalyst”. Reports of the National Academy of Sciences of Ukraine, no. 1 (April 24, 2024): 73–79. Accessed December 23, 2024. https://nasu-periodicals.org.ua/index.php/dp/article/view/2531.