Nouira, R., and B. Aqzzouz. “On Some Sublattices of Regular Operators on Banach Lattices”. Methods of Functional Analysis and Topology 14, no. 4 (December 25, 2008): 297–301. Accessed December 18, 2025. https://zen.imath.kiev.ua/index.php/mfat/article/view/392.