von Spaeth, Ove. Dating the Oldest Egyptian Star Map. Centaurus International Magazine of the History of Mathematics, Science and Technology. 2000, 42 (3): 159–179 [2007-10-21]. (原始内容存档于2019-01-26).
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von Spaeth, Ove. Dating the Oldest Egyptian Star Map. Centaurus International Magazine of the History of Mathematics, Science and Technology. 2000, 42 (3): 159–179 [2007-10-21]. (原始内容存档于2019-01-26).