@Inproceedings{lewen2006doioaos, author = "Holger Lewen and Enrico Motta and Jose Manuel Gomez and Martin Dzbor and Carlos Buil and Olaf G{\"o}rlitz", booktitle = "Proceedings of the 2nd Workshop on OWL: Experiences and Directions", editor = "Bernardo Cuenca Grau and Pascal Hitzler and Conor Shankey and Evan Wallace", month = "November", series = "CEUR Workshop Proceedings", title = "Developing ontologies in OWL: An observational study", volume = "216", year = "2006", }