Gelfand pair associated with a Hoph algebra and a coideal von Chapovsky, Yu.

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Factorization of Conditional Expectations on Kac Algebras and Quantum Double Coset Hypergroups von Kalyuzhnyi, A.A., Chapovsky, Yu.A.

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On the group of extensions for the bicrossed product construction for a locally compact group von Chapovsky, Yu. A., Kalyuzhnyi, A. A., Podkolzin, G. B.

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