Gauss, Carolo Friderico (in Latin). Theoria motvs corporvm coelestivm in sectionibvs conicis Solem ambientivm [Theory of the motion of the heavenly bodies moving about the Sun in conic sections]. Arizona education futures.- Glossary definitions of selected futures terms Aldrich, John; Miller, Jeff. "Earliest uses of symbols in probability and statistics". Bryc, Wlodzimierz “The normal distribution: characterizations with applications”