Anjum, A., M. Hosein, S. Akram Butt, F. ., and Y. Shafiq. “Qualitative Analysis of Bacterial Aerosols Generated During Ultrasonic Dental Scaling”. Journal of Advances in Medicine and Medical Research, Vol. 31, no. 11, Jan. 2020, pp. 1-12, doi:10.9734/jammr/2019/v31i1130333.