@Article{haase2008tpnlitkbtcotos, author = "Peter Haase and Philipp Cimiano and J{\"o}rg Heizmann and Matthias Mantel and Rudi Studer", journal = "Data {\&} Knowledge Engineering (DKE)", month = "Mai", number = "2", pages = "325-354", publisher = "Elsevier", title = "Towards Portable Natural Language Interfaces to Knowledge Bases - The Case of the ORAKEL System -", volume = "65", year = "2008", }