@Book{Euler[1764],
author  = "Euler, Johann Albrecht",
title   = "Albrecht Eulers Beantwortung einiger arithmetischen Fragen",
year    = "[1764]",
address = "[München]",
series  = "Abhandlungen",
volume  = "2,2,[1]",
url     = "https://publikationen.badw.de/de/003389891",
}