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JANYŠKA, Josef a Marco MODUGNO. Covariant pre-quantum operators. In Proceedings of the International Conference on "Differential Geometry and Its Applications", eds. O. Kowalski, D. Krupka and J. Slovák. Opava: Silesian University, 2002, s. 285-308. ISBN 80-7248-166-5.Podrobněji: https://is.muni.cz/publication/406534/cs
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JANYŠKA, Josef; Marco MODUGNO a Dirk SALLER. Covariant quantum mechanics and quantum symmetries. In Proceedings of the International Conference on "Recent Developments in General Relativity", eds. R. Cianci, R. Collina, M. Francaviglia and P. Fre. Německo: Springer-Verlag, 2002, s. 179-202. ISBN 80-7248-166-5.Podrobněji: https://is.muni.cz/publication/406539/cs