Euler gained his doctorate (Ph.D.) in 1979 at Gießen university (Prof. Rolf Hiersche) with a theses on parallels in nominal formation between Indo-Iranian languages and Greek.
Euler obtivo o seu doutoramento (Ph.D.) en 1979 na Universidade de Gießen (Prof. Rolf Hiersche) cunha tese sobre paralelos na formación nominal entre as linguas indoiranias e o grego antigo.