@article{orchid216,
          volume = {11},
          number = {99},
           title = {Crowdsourcing contest dilemma},
          author = {Victor Naroditskiy and Nicholas R Jennings and Pascal Van Hentenryck and Manuel Cebrian},
            year = {2015},
         journal = {Journal of The Royal Society Interface},
        subjects = {Crowd-sourcing, Incentive Engineering},
             url = {http://www.orchid.ac.uk/eprints/216/1/20140532.full.pdf}
}