Bischof, Norbert (summer 1997)
Hirsig, René (spring 2009)
Marx, Wolfgang (spring 2008)
Moser, Ulrich (winter 1990)
Schelling, Walter A. (summer 2002)
Schmidtchen, Gerhard (winter 1990)
Strauch, Inge (summer 1999)
von Uslar, Detlev (summer 1993)
Ruch, Willibald (summer 2021)