W. K. ABDULSAHIB, S. H. GANDUH, . M. A. MAHDI, and L. S. JASIM, “ADSORPTIVE REMOVAL OF DOXYCYCLINE FROM AQUEOUS SOLUTION USING GRAPHENE OXIDE/HYDROGEL COMPOSITE”, Int J App Pharm, vol. 12, no. 6, pp. 100–106, Nov. 2020.