@Book{Föppl1913,
author  = "Föppl, Ludwig",
title   = "Wirbelbewegung hinter einem Kreiszylinder",
year    = "1913",
address = "München",
series  = "Sitzungsberichte",
volume  = "1913,1",
url     = "https://publikationen.badw.de/en/003395101",
}