Armijos Briones FM, Castillo González JI, Armijos Moreta JF, Boada Zurita CDR. Treatment Alternatives to Gingival Hyperpigmentation using Neutrosophic Correlation Coefficients. Neutrosophic Sets Syst. [Internet]. 2022 Dec. 1 [cited 2026 Jul. 21];52:319-25. Available from: https://fs.unm.edu/nss8/index.php/111/article/view/2664