Yilmaz, ULKU, and Hasan Kucukbay. “Synthesis and Properties of New Endotricyclic Electron-Rich Olefins and Their Some Derivatives”. Asian Journal of Chemistry, vol. 21, no. 8, Mar. 2010, pp. 6149-55, https://asianpubs.org/index.php/ajchem/article/view/12302.