@Book{Böhm1915,
author  = "Böhm, F.",
title   = "Beiträge zum Äquivalenzproblem der Raumkurven",
year    = "1915",
address = "München",
series  = "Sitzungsberichte",
volume  = "1915,11",
url     = "https://publikationen.badw.de/de/003395505",
}