KALYUZHNYI, A. A.; PODKOLZIN, G. B.; CHAPOVSKY, Yu. Conditional Expectations on Compact Quantum Groups and Quantum Double Cosets. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 57, n. 5, p. 644–653, 2005. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/3630. Acesso em: 5 dec. 2025.