Y. Aqar,D. , , Al Alak,H. H. , , Rahmanian,N. , and Mujtaba,I. . "The Investigation of Purity Improvement for the Production of Methyl Propionate in Different Types of Batch Distillation Systems", Journal of Oil, Gas and Petrochemical Technology, 5, Number 1, 2018, 63-75. doi: 10.22034/jogpt.2019.85647