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Zur Darstellung definiter Funktionen als Summe von Quadraten

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Literatur

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Pfister, A. Zur Darstellung definiter Funktionen als Summe von Quadraten. Invent Math 4, 229–237 (1967). https://doi.org/10.1007/BF01425382

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  • DOI: https://doi.org/10.1007/BF01425382

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