1. Elliott, D., 1970, Determination of finite strain and initial shape from deformed elliptical objects. Geol. Soc. Amer. Bull., 81, 2221–2236.
2. 深谷賢治(Fukaya, K.), 2004, 双曲幾何(Hyperbolic Geometry).岩波書店(Iwanami Shoten), 167p. English translation from the original written in Japanese.
3. Jones, M. C., 2004, The Möbius distribution on the disc. Ann. Inst. Stat. Math., 56, 733–742.
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