Nguyen, V., Nguyen, L., Nguyen, G., Nguyen, D., & Nguyen, M. (2016). Controlling the retention and separation of water–soluble vitamins on zwitterion column by hydrophilic interaction echanism. Science and Technology Development Journal, 19(4), 113-122. https://doi.org/https://doi.org/10.32508/stdj.v19i4.659