KUZNETSOVA, A. Yu.; PATRIN, Ye. V. On the structure of $C^*$-algebra generated by a family of partial isometries and multipliers. Armenian Journal of Mathematics, Yerevan, Armenia, v. 7, n. 1, p. 50–58, 2015. Disponível em: https://armjmath.sci.am/index.php/ajm/article/view/110. Acesso em: 3 apr. 2025.