Markus Krause. Homo ludens in the loop: playful human computation systems. PhD thesis, University of Bremen, 2014. [doi]
@phdthesis{dnb-3964, title = {Homo ludens in the loop: playful human computation systems}, author = {Markus Krause}, year = {2014}, url = {http://d-nb.info/1064858201}, researchr = {https://researchr.org/publication/dnb-3964}, cites = {0}, citedby = {0}, school = {University of Bremen}, }