ChapovskyY. and KalyuzhnyiA. A. (2003) “Factorization of Conditional Expectations on Kac Algebras and Quantum Double Coset Hypergroups”, Ukrains’kyi Matematychnyi Zhurnal, 55(12), pp. 1669-1677. Available at: https://umj.imath.kiev.ua/index.php/umj/article/view/4029 (Accessed: 27July2024).