Broemeling, Lyle D. (1 November 2011). «An Account of Early Statistical Inference in Arab Cryptology». The American Statistician. 65 (4): 255–257. doi:10.1198/tas.2011.10191. S2CID123537702.
Broemeling, Lyle D. (1 November 2011). «An Account of Early Statistical Inference in Arab Cryptology». The American Statistician. 65 (4): 255–257. doi:10.1198/tas.2011.10191. S2CID123537702.