Holovatiuk, V. M., Yu. V. Bezugly, and V. I. Kashkovsky. “Synthesis of New 4,4-Spirocycloalkenic 1,2-Diphenylpyrazolidine-3,5-Dione Derivatives by Ring-Closing Metathesis Reactions”. Journal of Organic and Pharmaceutical Chemistry 12, no. 3(47) (September 12, 2014): 33–37. Accessed May 7, 2024. https://ophcj.nuph.edu.ua/article/view/ophcj.14.803.