@Book{Lindemann1921,
author  = "Lindemann, Ferdinand",
title   = "Die Biegungsflächen einer gegebenen Fläche",
year    = "1921",
address = "München",
series  = "Abhandlungen",
volume  = "29,3",
url     = "https://publikationen.badw.de/en/003071263",
}