E. Agichtein, E. Brill, and S. Dumais. SIGIR '06: Proceedings of the 29th annual international ACM SIGIR conference on Research and development in information retrieval, page 19--26. New York, NY, USA, ACM Press, (2006)
G. Barlow, and C. Oh. GECCO 2006: Proceedings of the 8th annual conference
on Genetic and evolutionary computation, 1, page 135--142. Seattle, Washington, USA, ACM Press, (8-12 July 2006)
A. Borisov, M. Wardenaar, I. Markov, and M. de Rijke. The 41st International ACM SIGIR Conference on Research &\#38; Development in Information Retrieval, page 45--54. New York, NY, USA, ACM, (2018)
M. Boryczka, and Z. Czech. GECCO 2002: Proceedings of the Genetic and
Evolutionary Computation Conference, page 133. New York, Morgan Kaufmann Publishers, (9-13 July 2002)