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Hazarika, S., Goswami, P., Dutta, N. N., & Hazarika, A. K. (2002). Ethyl oleate synthesis by Porcine pancreatic lipase in organic solvents. Chemical Engineering Journal, 85(1), 61–68. doi:10.1016/s1385-8947(01)00144-9 
10.1016/S1385-8947(01)00144-9