Author,Title,Edition,Publisher,Year,Series,Number,ISBN,ISSN,URL
"Martens, Wolfgang and Badura, Peter and Erichsen, Hans-Uwe",Allgemeines Verwaltungsrecht,"7., neubearbeitete Aufl",W. de Gruyter,1986,De Gruyter Lehrbuch,,"3110106639,3110106620",,https://cir.nii.ac.jp/crid/1130000795008895744