PUTRI, G. E., F. R. . GUSTI, A. N. SARY, S. ARIEF, N. JAMARUN, and S. . AMAR B. “SYNTHESIS AND ANTIMICROBIAL ACTIVITY OF CERIUM OXIDE/AG DOPES SILICA MESOPOROUS MODIFICATION AS NANOFILLERS FOR FOOD PACKAGING APPLICATIONS”. Malaysian Applied Biology, vol. 48, no. 4, Nov. 2019, pp. 25-32, https://jms.mabjournal.com/index.php/mab/article/view/1873.