F. Nizam, N. Mengal, M. Tareen, and S. Hayat, “SKELETAL MATURATION EVALUATION USING MANDIBULAR SECOND MOLAR CALCIFICATION STAGES”, Pak Armed Forces Med J, vol. 71, no. 3, pp. 980–83, Jun. 2021, doi: 10.51253/pafmj.v71i3.3670.