@Book{Föppl1926,
author  = "Föppl, Ludwig",
title   = "Achsensymmetrisches Ausknicken zylindrischer Schalen",
year    = "1926",
address = "München",
series  = "Sitzungsberichte",
volume  = "1926,3",
url     = "https://publikationen.badw.de/en/003390859",
}