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Elavarasan, P. , Kondamudi, K. , Upadhyayula, S.. "Comparative Kinetic Study on Alkylation of p-cresol with Tert-butyl Alcohol using Different SO3-H Functionalized Ionic Liquid Catalysts". World Academy of Science, Engineering and Technology, Open Science Index 42, International Journal of Chemical and Molecular Engineering (2010), 4(6), 384 - 389.