ОvsepyanKH. Type of some nuclear subalgebras of the Toeplitz algebra generated by the inverse subsemigroups of a bicyclic semigroup. Ukr. Mat. Zhurn. [Internet]. 2017Nov.25 [cited 2024Dec.4];69(11):1551-63. Available from: https://umj.imath.kiev.ua/index.php/umj/article/view/1802