^Hockey, Thomas. Biographical encyclopedia of astronomers. New York: Springer. 2014: 1074. ISBN 9781441999184. Kushyar ibn Labban was an eminent Iranian astronomer known for his work on astronomical handbooks (zijes) in addition to his work in mathematics and astrology.
^Selin, Helaine. Encyclopaedia of the history of science, technology, and medicine in non-western cultures. Berlin New York: Springer. 2008: 241. ISBN 9781402049606. Another important early treatise that publicized decimal numbers was Iranian mathematician and astronomer Kūshyār ibn Labbān’s (fl. 1000) Kitāb fī usūl hisāb al-hind (Principles of Hindu Reckoning), a leading arithmetic textbook.使用|accessdate=需要含有|url= (帮助)