T. D. Pham, H. T. Tran, T. N. Phan, and N. L. Le, “EVALUATION OF TREATMENT RESULTS BY THE MODIFIED WIDMAN FLAP SURGERY ON CHRONIC PERIODONTITIS AT CAN THO UNIVERSITY OF MEDICINE AND PHARMACY HOSPITAL, 2018-2020”, CTJUMP, no. 32, pp. 193–200, Aug. 2026.