@InProceedings{thielscher:KI03, author = "Ozan Kahramano{\u g}ullar{\i} and Michael Thielscher", title = "A Formal Assessment Result for Fluent Calculus Using the Action Description Language {${\cal A}_k$}", booktitle = "Proceedings of the German Annual Conference on Artificial Intelligence (KI)", year = "2003", editor = "R.\ Kruse", pages = "209--223", volume = "2821", series = "LNAI", publisher = "Springer", address = "Hamburg, Germany", month = sep }