@doctoralThesis{Büchler_2016,
title={Cancer of Unknown Primary (CUP) der Kopf-Hals-Region : Eine retrospektive Studie},
author={Büchler, Simeon Benjamin},
doi={http://dx.doi.org/10.22028/D291-27073},
adress={Homburg/Saar},
year={2016}
}