Sibabrata Choudhury .ical Affiliation: Envision OpenStreetMap username: No response Session 09-2210:3020minLightning Talks IIISibabrata Choudhury, Ilya Zverev, Beata Tautan-Jancso, Alina Negreanu, Said TurkseverLightning TalksGeneralGroßer Hörsaal