Brentjes, Sonja Department Structural Changes in Systems of Knowledge, Max Planck Institute for the History of Science, Max Planck Society;
http://referenceworks.brillonline.com/entries/encyclopaedia-of-islam-3/arithmetic-COM_22875?s.num=79&s.start=60 (全文テキスト(全般))
Brentjes, S. (2017). Arithmetic. In K., Fleet, G., Krämer, D., Matringe, J., Nawas, & E., Rowson (Eds.), Encyclopaedia of Islam (3). Leiden: Brill. doi:10.1163/1573-3912_ei3_COM_22875.