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Buasri, A.; Lertnimit, S.; Nisapruksachart, A.; Khunkha, I.; Loryuenyong, V. Box-Behnken Design for Optimization on Esterification of Free Fatty Acids in Waste Cooking Oil Using Modified Smectite Clay Catalyst. ASEAN J. Chem. Eng. 2023, 23, 40-51.