Suman Das and Binod Chandra Tripathy, “Pairwise Neutrosophic-b-Open Set in Neutrosophic Bitopological Spaces”, Neutrosophic Sets Syst., vol. 38, pp. 135–144, Dec. 2020, Accessed: Jul. 29, 2025. [Online]. Available: https://fs.unm.edu/nss8/index.php/111/article/view/4175