Abstract
1. Grant Cairns, Margaret McIntyre, and John Strantzen, Geometric proofs of some recent results of Yang Lu, this MAGAZINE 66:4 (October 1993), 263-265. 2. N. A. Court, Modern Pure Solid Geometry, Chelsea Publishing Co., New York, 1964. 3. H. L. Davies, Packings of spherical triangles, Proceedings of The Colloquium on Convexity, Copenhagen, August 1965, pp. 42-51. 4. W. J. M'Clelland and T. Preston, A Treatise on Spherical Trigonometry with Applications to Spherical Geometry Part I, Macmillan Publishing Co., New York, 1907, and Part II, 1909. 5. Patrick J. Ryan, Euclidean and Non-Euclidean Geometry, An Analytic Approach, Cambridge University Press, Cambridge, London, New York, New Rochelle, Melbourne, Sydney, 1986. 6. D. M. Y. Sommerville, Division of space by congruent triangles and tetrahedra, Proceedings of The Royal Society of Edinburgh, 43 (1923) pp. 85-116. 7. I. Todhunter and J. G Leatham, Spherical Trigonometry, Macmillan and Co. Limited, St. Martin's Street, London, 1943. 8. Jeffrey R. Weeks, The Shape of Space, 2nd ed., Marcel Decker, Inc., New York, Basel, 2002.
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