Nguyen, T. N. B., Trinh, T. T. A., Nguyen, U. T., & Dong, T. A. D. (2017). Study of Glycosaminoglycans Sulphate (GAGs) Recovery Efficiency from the Hydrolysis of Chicken Kneel Cartilage by Alcalase 2.4L. Old Journal, 117, 86-92. https://jst.vn/index.php/old/article/view/461