@Book{Löbell1947,
author  = "Löbell, Frank",
title   = "Betrachtungen über Flächenabbildungen. Das Vektorpolynom [lambda]²j1 - [lambda]j + j2",
year    = "1947",
address = "München",
series  = "Sitzungsberichte",
volume  = "1945/46,11",
url     = "https://publikationen.badw.de/en/003835607",
}