@inbook{Kreutzer03, title = "Pure and Applied Fixed-Point Logics", author = "Stephan Kreutzer", year = "2003", booktitle = "{A}usgezeichnete {I}nformatik {D}issertationen 2003", editor = "D. Wagner et al.", note = "in german", publisher = "German Informatics Society (GI)", series = "Lecture Notes in Informatics - Dissertations", volume = "D-3", }