@Book{Fronhofer1781,
author  = "Fronhofer, Ludwig",
title   = "Über das Studium der Kupferstecherey",
year    = "1781",
address = "München",
series  = "Abhandlungen",
volume  = "1,5",
url     = "https://publikationen.badw.de/de/003390738",
}