Høyrup, J. (2012). Sanskrit-Prakrit interaction in elementary mathematics as reflected in Arabic and Italian formulations of the rule of three - and something more on the rule elsewhere. Max-Planck.Institu für Wissenschaftsgeschichte.
Lua i Stíl Chicago (17ú heag.)Høyrup, Jens. Sanskrit-Prakrit Interaction in Elementary Mathematics as Reflected in Arabic and Italian Formulations of the Rule of Three - and Something More on the Rule Elsewhere. Berlin: Max-Planck.Institu für Wissenschaftsgeschichte, 2012.
Lua MLA (8ú heag.)Høyrup, Jens. Sanskrit-Prakrit Interaction in Elementary Mathematics as Reflected in Arabic and Italian Formulations of the Rule of Three - and Something More on the Rule Elsewhere. Max-Planck.Institu für Wissenschaftsgeschichte, 2012.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.