The Bhaskara-Aryabhata approximation to the sine function. (English)
Math. Mag. 84, No. 2, 98-107 (2011).
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Multivariable analysis. (English)
London: Springer (ISBN 978-0-85729-191-2/pbk; 978-0-85729-192-9/ebook). x, 394~p. EUR~59.95/net; \sterling~53.99; SFR~86.00 (2011).
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Groups associated with conics. (English)
Math. Gaz. 93, No. 526, 27-41 (2009).
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