Ashaduzzaman, Md., et al. “Synthesis of Cyclohexylcresols by Alkylation of Cresols With Cyclohexanol in the Presence of Perchloric Acid”. Dhaka University Journal of Science, vol. 60, no. 2, Aug. 2012, pp. 195-8, doi:10.3329/dujs.v60i2.11503.