M. H. Tareque, M. Ismail, P. Chakravarty, A. A. Rana, and M. Saha, “Benzylation of Phenol with Benzyl Alcohol in the Presence of Sulphuric Acid”, Bangladesh J. Sci. Ind. Res., vol. 41, no. 3, pp. 257–261, Aug. 2007.