Ilkov, Oleg, et al. “Antibacterial and Cytotoxic Activity of Metronidazole and Levofloxacin Composites With Silver Nanoparticle”. Current Issues in Pharmacy and Medical Sciences, vol. 34, no. 4, Dec. 2021, pp. 224-8, https://doi.org/10.2478/cipms-2021-0040.