Olson, M. J. (2012). Cloud computing for citizen science. Master's thesis Unpublished master's thesis , California Institute of Technology .

Bai, X., Cambazoglu, B. B. & Junqueira, F. P. (2011). Discovering URLs through user feedback. Proceedings of the 20th ACM international conference on Information and knowledge management (p./pp. 77--86), New York, NY, USA: ACM. ISBN: 978-1-4503-0717-8

Liu, M., Cai, R., Zhang, M. & Zhang, L. (2011). User browsing behavior-driven web crawling. Proceedings of the 20th ACM international conference on Information and knowledge management (p./pp. 87--92), New York, NY, USA: ACM. ISBN: 978-1-4503-0717-8