Kabir, Md Tanvir, et al. “Physicochemical Properties of Chitosan Extracted from <i>Pleurotus ostreatus< i> And Improvement of Its Antibacterial Activity by Gamma Radiation”. Bangladesh Journal of Microbiology, vol. 37, no. 2, Dec. 2020, pp. 52-55, doi:10.3329/bjm.v37i2.51211.