Klomklieng, W., and A. Prateepasen. “Molasses Fermentation to Ethanol by SaccharomycescerevisiaeM30 Using Low Ultrasonic Frequency Stimulation”. Asia-Pacific Journal of Science and Technology, vol. 17, no. 6, Apr. 2017, pp. 950-7, https://so01.tci-thaijo.org/index.php/APST/article/view/83755.