Debnath, S., M. Farzan, I. Zerin, M. Kabir, and M. Hossain. “Dental Status and Oral Hygiene Practice Among the Elderly People Attending at the Outpatient Department of BIRDEM Hospital, Dhaka”. Bangladesh Journal of Dental Research &Amp; Education, vol. 2, no. 1, July 2013, pp. 17-21, doi:10.3329/bjdre.v2i1.15573.