@book{TUW-253050, editor = {Capineri, Cristina and Haklay, Muki and Huang, Haosheng and Antoniou, Vyron and Kettunen, Juhani and Ostermann, Frank and Purves, Ross}, title = {European Handbook of Crowdsourced Geographic Information}, publisher = {Ubiquity Press London}, year = {2016}, numpages = {464}, isbn = {978-1-909188-79-2} }