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Kulikovskij, P. G. (October 1981). «Book Review: Science at Samarkand: From the History of Science in the Time of Ulugh Beg». Journal for the History of Astronomy12 (3): 211–12. doi:10.1177/002182868101200309. ISSN0021-8286.
Kennedy, E. S. (1956). «A Survey of Islamic Astronomical Tables». Transactions of the American Philosophical Society46 (2): 123–77. doi:10.2307/1005726. ISSN0065-9746.