Murat Demirbas Murat Ali Bayir Cuneyt Gurcan Akcora Yavuz Selim Yilmaz Hakan Ferhatosmanoglu Crowd-sourced sensing and collaboration using twitter. 1-9 2010 WOWMOM http://doi.ieeecomputersociety.org/10.1109/WOWMOM.2010.5534910 conf/wowmom/2010 db/conf/wowmom/wowmom2010.html#DemirbasBAYF10