“Synthesis of 6,6-Dimethyl-2-Cyclopentadienylethylbicyclo[3.1.1] Hept-2-Ene and of 6,6-Dimethyl-2-Indenylethylbicyclo[3.1.1] Hept-2-Ene”. Global Journal of Science Frontier Research, vol. 13, no. B5, Aug. 2013, pp. 9-12, https://www.journalofscience.org/index.php/GJSFR/article/view/903.