M. Hänska-ahy and R. Shapour, WHO'S REPORTING THE PROTESTS?, Journalism Studies, vol.90, issue.1, pp.29-45, 2013.
DOI : 10.1080/17512781003670031

S. Wunsch-vincent and G. Vickery, Participative Web: User-Created Content [online document] Directorate for Science, Technology and Industry, 2007.

S. Paulussen, USING CITIZENS FOR COMMUNITY JOURNALISM, Journalism Practice, vol.5, issue.2, pp.1-16, 2013.
DOI : 10.1386/nl.8.177_1

N. Diakopoulos, M. De-choudhury, and M. Naaman, Finding and assessing social media information sources in the context of journalism, Proceedings of the 2012 ACM annual conference on Human Factors in Computing Systems, CHI '12, pp.2451-2460, 2012.
DOI : 10.1145/2207676.2208409

M. Mortensen, When citizen photojournalism sets the news agenda: Neda Agha Soltan as a Web 2.0 icon of post-election unrest in Iran, Global Media and Communication, pp.4-16, 2011.
DOI : 10.1177/1742766510397936

D. Radcliffe, Here and Now: UK hyperlocal media today, Nesta, 2012.

S. Lai, Iconic images and citizen journalism, Proceedings of the 2011 iConference on, iConference '11, pp.702-703, 2011.
DOI : 10.1145/1940761.1940876

C. Wardle and A. Williams, ugc@thebbc: Understanding its impact upon contributors, noncontributors and BBC News [online document]. Cardiff, UK, Cardiff School of Journalism, Media and Cultural Studies

E. Estellés-arolas and F. González-ladrón-de-guevara, Towards an integrated crowdsourcing definition, Journal of Information Science, vol.39, issue.6, pp.189-200, 2012.
DOI : 10.1079/9780851995465.0000

H. Väätäjä, T. Vainio, and E. Sirkkunen, Location-based crowdsourcing of hyperlocal news: dimensions of participation preferences, Proc. GROUP2012, pp.85-94, 2012.

. Väätäjä, . Heli, and P. Egglestone, Briefing news reporting with mobile assignments: perceptions, needs and challenges, Proc. CSCW, pp.485-494, 2012.

R. Fröhlich, O. Quiring, and S. Engesser, Between idiosyncratic self-interests and professional standards: A contribution to the understanding of participatory journalism in Web 2.0. Results from an online survey in Germany, Journalism, vol.10, issue.1, 2012.
DOI : 10.1006/ceps.1999.1020

R. Ryan and E. Deci, Intrinsic and Extrinsic Motivations: Classic Definitions and New Directions, Contemporary Educational Psychology, vol.25, issue.1, pp.54-67, 2000.
DOI : 10.1006/ceps.1999.1020
URL : http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.318.808

O. Nov, M. Naaman, and C. Ye, Analysis of participation in an online photo-sharing community: A multidimensional perspective, Journal of the American Society for Information Science and Technology, vol.44, issue.1, pp.1-12, 2010.
DOI : 10.1002/asi.21278

D. C. Brabham, Moving the crowd at iStockphoto: The composition of the crowd and motivations for participation in a crowdsourcing application, First Monday, vol.13, issue.6, 2008.
DOI : 10.5210/fm.v13i6.2159

T. Buehner and J. Jones, Exposing the digital newshound: A study of the values, influences, and characteristics of creators of citizen-journalistic photographic content, Midwinter conference of the Association for Education in Journ. and Mass Communication, 2011.

H. Väätäjä, Readers' motivations to participate in hyperlocal news content creation, Proc. GROUP2012, ACM, pp.309-312, 2012.

F. Alt, A. S. Shirazi, A. Schmidt, U. Kramer, and Z. Nawaz, Location-based crowdsourding ? Extending crowdsourcing to the real world, Proc. NordiCHI2010, pp.13-22, 2010.
DOI : 10.1145/1868914.1868921

H. Väätäjä, T. Vainio, E. Sirkkunen, and K. Salo, Crowdsourced news reporting: supporting news content creation with mobile phones, Proc. MobileHCI '11, pp.435-444, 2011.

H. Väätäjä, M. Ahvenainen, M. Jaakola, and T. Olsson, Exploring Augmented Reality for User- Generated Hyperlocal News Content, CHI'13 Extended Abstracts, 2013.

H. Chesbrough, Open business models ? How to thrive in the new innovation landscape, 2006.

H. Wigelius and H. Väätäjä, Dimensions of Context Affecting User Experience in Mobile Work, Human-Computer Interaction?INTERACT 2009, pp.604-617, 2009.
DOI : 10.1007/978-3-642-03658-3_65

M. Bell, Interweaving mobile games with everyday life, Proceedings of the SIGCHI conference on Human Factors in computing systems , CHI '06, pp.417-426, 2006.
DOI : 10.1145/1124772.1124835
URL : http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.591.4479

E. Schenk and C. Guittard, Towards a characterization of crowdsourcing practices, Journal of Innovation Economics, vol.7, issue.1, pp.1-7, 2011.
DOI : 10.3917/jie.007.0093
URL : https://hal.archives-ouvertes.fr/halshs-00439256