Abdul Karim Shah et al.trans. 2021. Synthesis of Isopulegol Through Cyclisation of Citronellal Using Solid Acid Catalysts: Catalytic Reaction Performance Evaluation and Process Parameters Optimization. Pakistan Journal of Analytical & Environmental Chemistry. 22, 2 (Dec. 2021), 252–263. DOI:https://doi.org/10.21743/pjaec/2021.12.04.