This book contains the Proceedings of the Nineteenth Conference JURIX Legal Knowledge and Information Systems (JURIX 2006). Typical for the field of law is the use of knowledge resources that are written, especially the sources of law. This has been subject to the AI & Law research for a long time, ranging from structuring and accessing legal sources to use natural language processing techniques in order to determine the semantic utterance language. This book contains four papers on sources of law. Three papers are included on the application and last but not least, this book contains four short papers on various topics. IOS Press is an international scientific, technical and medical publisher of high-quality books for academics, scientists, and professionals in all fields.