Derech, V.D. (2010) “Structure of finite inverse semigroup with zero, in which every stable order is fundamental or antifundamental”, Ukrains’kyi Matematychnyi Zhurnal, 62(1), pp. 29–39. Available at: https://umj.imath.kiev.ua/index.php/umj/article/view/2841 (Accessed: 5 December 2025).