@Book{Euler[1768],
author  = "Euler, Johann Albrecht",
title   = "J. Albrecht Eulers Nachricht von einer besondern magnetischen Sonnenuhr",
year    = "[1768]",
address = "[München]",
series  = "Abhandlungen",
volume  = "5,[5]",
url     = "https://publikationen.badw.de/de/003395672",
}