Cornell University Library Historical Math Monographs
- An elementary treatise on modern pure geometry
- 1893, 237-265
Chapter XV: Systems of circles
First available in Project Euclid: 19 February 2015
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Lachlan, Robert. Chapter XV: Systems of circles. An elementary treatise on modern pure geometry, 237--265, Macmillan and Co, London, New York, 1893. https://projecteuclid.org/euclid.chmm/1424377558