G. Little, L. Chilton, M. Goldman, и R. Miller. HCOMP '09: Proceedings of the ACM SIGKDD Workshop on Human Computation, стр. 29--30. New York, NY, USA, ACM, (2009)
C. Gagné, и M. Parizeau. GECCO 2002: Proceedings of the Genetic and
Evolutionary Computation Conference, стр. 888. New York, Morgan Kaufmann Publishers, (9-13 July 2002)
X. Zhang, Y. Qu, C. Giles, и P. Song. CHI '08: Proceeding of the twenty-sixth annual SIGCHI conference on Human factors in computing systems, стр. 677--680. New York, NY, USA, ACM, (2008)