@Book{Ruch1955,
author  = "Ruch, Ernst",
title   = "Über die Bindung in den Cyclopentadienylmetallkomplexen",
year    = "1955",
address = "München",
series  = "Sitzungsberichte",
volume  = "1954,20",
url     = "https://publikationen.badw.de/en/003383814",
}