4
by Seiwert, Lothar
Published 2012
Gabal Verlag GmbH

5
by Müller, Horst
Published 2013
Haufe-Lexware GmbH & Co. KG

6
by Bischof, Claus
Published 2012
Haufe-Lexware GmbH & Co. KG

7
by Bischof, Klaus
Published 2019
Haufe-Lexware GmbH & Co. KG