Nguyen, G., D. Nguyen, and M. Nguyen. “Synthesis of the Reversed Stationary Phase for Solid Phase Extraction Using Trimethoxyoctadecyl Silane”. Science and Technology Development Journal, Vol. 19, no. 1, Mar. 2016, pp. 11-18, doi:https://doi.org/10.32508/stdj.v19i1.536.