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Livingston, John W. (1971). "Ibn Qayyim al-Jawziyyah: A Fourteenth Century Defense against Astrological Divination and Alchemical Transmutation". Journal of the American Oriental Society. 91 (1): 96–103 [99]. doi:10.2307/600445. JSTOR600445.
Marmura 1965. Marmura, Michael E. (1965), "Review: An Introduction to Islamic Cosmological Doctrines. Conceptions of Nature and Methods Used for Its Study by the Ikhwan Al-Safa'an, Al-Biruni, and Ibn Sina by Seyyed Hossein Nasr", Speculum, 40 (4): 744–746, doi:10.2307/2851429, JSTOR2851429
Rosen 1985, p. 19–21. Rosen, Edward (1985), "The Dissolution of the Solid Celestial Spheres", Journal of the History of Ideas, 46 (1): 13–31, doi:10.2307/2709773, JSTOR2709773