47D20 
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Acta Universitatis Carolinae. Mathematica et Physica,
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Grzaślewicz, Ryszard:
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Commentationes Mathematicae Universitatis Carolinae,
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Grzaślewicz, R.:
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Acta Universitatis Carolinae. Mathematica et Physica,
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Fiedler, Miroslav; Pták, Vlastimil:
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