ஆறு வட்டங்கள் தேற்றம் (Tamil Wikipedia)

Analysis of information sources in references of the Wikipedia article "ஆறு வட்டங்கள் தேற்றம்" in Tamil language version.

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8^th place

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archive.org (Global: 6^th place; Tamil: 8^th place)

Evelyn, C. J. A.; Money-Coutts, G. B.; Tyrrell, John Alfred (1974). The Seven Circles Theorem and Other New Theorems. London: Stacey International. pp. 49–58. ISBN 978-0-9503304-0-2.
Wells, David (1991). The Penguin Dictionary of Curious and Interesting Geometry. New York: Penguin Books. pp. 231. ISBN 0-14-011813-6.

doi.org (Global: 2^nd place; Tamil: 4^th place)

dx.doi.org

Ivanov, Dennis; Sergei Tabachnikov (2016). "The six circles theorem revisited". American Mathematical Monthly 123 (7): 689–698. doi:10.4169/amer.math.monthly.123.7.689.