TUROWSKA, L. B.; PROSKURIN, D. P. On C*-algebra associated with ${\rm Pol}({\rm Mat}_ {2,2})_q$. Methods of Functional Analysis and Topology, [S. l.], v. 7, n. 1, p. 88–92, 2001. Disponível em: https://zen.imath.kiev.ua/index.php/mfat/article/view/143. Acesso em: 17 dec. 2025.