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Die Vertreibung aus dem Platonischen ParadiesErwägen – Wissen – Ethik 17 (Naturalism in Mathematics). 2006.
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Mathematical Creation in Frege's GrundgesetzeIn Philip A. Ebert & Marcus Rossberg (eds.), Essays on Frege's Basic Laws of Arithmetic, Oxford University Press. pp. 325-342. 2019.
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Contemporary Reviews of Frege’s GrundgesetzeIn Philip A. Ebert & Marcus Rossberg (eds.), Essays on Frege's Basic Laws of Arithmetic, Oxford University Press. pp. 637-652. 2019.