Maintenance work on the ZORA database servers is scheduled for Thursday 25th July 2019 from 19:00-20:00. During this period ZORA and JDB will not be available. Thank you for your understanding.
Mobasheri, Amin; Huang, Haosheng; Degrossi, Lívia; Zipf, Alexander (2018). Enrichment of OpenStreetMap data completeness with sidewalk geometries using data mining techniques. Sensors, 18(2):509.