@Article{WeMo07c,
  author = 	 {M. Wessel and R. M{\"o}ller},
  title = 	 {Flexible Software Architectures for Ontology-Based Information Systems},
  journal = 	 {Journal of Applied Logic, Special Issue on Emperically Sucessful Systems (2007)},
  year = 	 {2007},
  note = 	 {to appear},
}