De pracht van priemgetallen : het verhaal van een eeuwenlange zoektocht naar verborgen patronen

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Amsterdam, Prometheus, 2014,196 p.

Euler's wonderful insight

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The mathematical intelligencer - ISSN 0343-6993-34:4 (2012) p. 1
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Stirred, not shaken, by Stirling's formula

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Mathematics magazine - ISSN 0025-570X-84:3 (2011) p. 208-211
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Lost and found : an unpublished zeta(2)-proof

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The mathematical intelligencer - ISSN 0343-6993-33:2 (2011) p. 29-32
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Using Fourier-Legendre expansions to derive series for $\frac{1}{\pi}$ and $\frac{1}{\pi^{2}}$

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Ramanujan journal - ISSN 1382-4090-22:2 (2010) p. 221-230
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