Robson, Eleanor. (2001). Neither Sherlock Holmes nor Babylon: a reassesment of Primpton 322.. Historia Mathematica, 167-206 or. doi:10.1006/hmat.2001.2317..
(Ingelesez)Kurt, Von Fritz. (1945). «The Discovery of Incommensurability by Hippasus of Metapontum» Annals of Mathematics. Second Series 46 (2): 242-264. doi:10.2307/1969021..