(Mrs.) Gloria Ukalina Obuzor, Dr Brian L. Booth, Dr.. " 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 [Online], (3 August 2013)