Ashine, G., and T. Andargie. “Mathematical Modelling of Thermal Degradation Kinetics of Ascorbic Acid in Brassica Carinata”. Science, Technology and Arts Research Journal, vol. 4, no. 1, Mar. 2015, pp. 115-9, https://journals.wgu.edu.et/index.php/star/article/view/168.