Rao, Calyampudi Radhakrishna, and Venugopalam Undurthi. “Closure Operators on Complete Almost Distributive Lattices-III”. Bulletin of the Section of Logic 44, no. 1/2 (January 1, 2015): 81–93. Accessed February 12, 2026. https://czasopisma.uni.lodz.pl/bulletin/article/view/16225.