@Book{Hornich1963,
author  = "Hornich, Hans",
title   = "Differentialgleichungen in allgemeinen Räumen",
year    = "1963",
address = "München",
series  = "Sitzungsberichte",
volume  = "1962,1",
url     = "https://publikationen.badw.de/de/003384075",
}