Journal of Geometry. 2002;73(1-2):39-48. doi: 10.1007/s00022-002-8584-6 Q30.52025
New intrinsic four point properties which characterize hyperbolic and euclidean spaces
DOI: 10.1007/s00022-002-8584-6
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Journal of Geometry. 2002;73(1-2):39-48. doi: 10.1007/s00022-002-8584-6 Q30.52025
DOI: 10.1007/s00022-002-8584-6
摘要 查看摘要