1.
Selezneva NV. Mathematical modeling of nilpotent subsemigroups of semigroups of contracting transformations of a Boolean. Ukr. Mat. Zhurn. [Internet]. 2009Jul.25 [cited 2024Nov.24];61(7):976-85. Available from: https://umj.imath.kiev.ua/index.php/umj/article/view/3072