Wittekind, Ch. editor. Sobin, L. H. editor. Klimpfinger, M. editor. SpringerLink (Online service)

Friedrich, Michael. editor. Felberbaum, Ricardo. editor. Tauchert, Sascha. editor. Diedrich, Klaus. editor. SpringerLink (Online service)

Lehmann, Jan. author. Retz, Margitta. author. Stöckle, Michael. author. SpringerLink (Online service)

Schölmerich, Jürgen. editor. Burdach, S. editor. Drexler, H. editor. Hallek, M. editor. Hiddemann, W. editor.