Daniel Dönni, Guilherme Sperb Machado, Christos Tsiaras, Burkhard Stiller: Schengen Routing: A Compliance Analysis; 9th International Conference on Autonomous Infrastructure, Management, and Security (AIMS 2015), "Intelligent Mechanisms for Network Configuration and Security", Ghent, Belgium, June 2015, ISBN 978-3-319-20033-0, pp 100-112. doi:10.1007/978-3-319-20034-7 URL: https://files.ifi.uzh.ch/CSG/staff/doenni/extern/publications/Schengen_Routing_A_Compliance_Analysis_AIMS_2015.pdf.