EmetsO. A., NedobachiiS. I., and RoskladkaО. V. “Irreducible System of Constraints for a General Polyhedron of Arrangements”. Ukrains’kyi Matematychnyi Zhurnal 55, no. 1 (January 25, 2003): 3-11. Accessed July 27, 2024. https://umj.imath.kiev.ua/index.php/umj/article/view/3882.