Reimer A, Kempf C, Rylov M, et al. (2014) Assigning scale equivalencies to OpenStreetMap polygons. In: Proceedings of AutoCarto international symposium on automated cartography, Pittsburgh, PA, 5–7 October 2014.
5.
StefanidisACrooksARadzikowskiJ (2013) Harvesting ambient geospatial information from social media feeds. GeoJournal78(2): 319–338. DOI: 10.1007/s10708-011-9438-2.
6.
SteinKBlaschkeS (2010) Interlocking communication: Measuring collaborative intensity in social networks. In: MemonNAlhajjR (eds) Social Network Analysis and Mining: Foundations and Applications, Berlin, Germany: Springer, pp. 231–252.