1. Location-based crowdsourcing
2. Daren C. Brabham. 2013. Using Crowdsourcing in Government. IBM Center for the Business of Government (2013) 1--42. Daren C. Brabham. 2013. Using Crowdsourcing in Government. IBM Center for the Business of Government (2013) 1--42.
3. "Why would anybody do this?"
4. Motivation for Open Collaboration: Crowd and Community Models and the Case of OpenStreetMap;Budhathoki Nama R.;American Behavioral Scientist,2012
5. Breaking monotony with meaning: Motivation in crowdsourcing markets