Armijos Briones, F. M. ., Castillo González, J. I. ., Armijos Moreta, J. F. . and Boada Zurita, C. D. R. . (2022) “Treatment Alternatives to Gingival Hyperpigmentation using Neutrosophic Correlation Coefficients”, Neutrosophic Sets and Systems, 52, pp. 319-325. Available at: http://fs.unm.edu/NSS2/index.php/111/article/view/2664 (Accessed: 22March2023).