P. A. SIMANJUNTAK, N. DJAUHARIE, and B. NURSASONGKO, “ANTIBACTERIAL EFFECTIVENESS OF 2% CHITOSAN AND 2% CHLORHEXIDINE AGAINST ENTEROCOCCUS FAECALIS IN BIOFILM (LABORATORY EXPERIMENT)”, Int J App Pharm, vol. 11, no. 1, pp. 44–48, Apr. 2019.