SIMANJUNTAK, P. A., N. DJAUHARIE, and B. NURSASONGKO. “ANTIBACTERIAL EFFECTIVENESS OF 2% CHITOSAN AND 2% CHLORHEXIDINE AGAINST ENTEROCOCCUS FAECALIS IN BIOFILM (LABORATORY EXPERIMENT)”. International Journal of Applied Pharmaceutics, vol. 11, no. 1, Apr. 2019, pp. 44-48, doi:10.22159/ijap.2019.v11s1.163.