H. Zhang, M. Korayem, E. You, and D. Crandall. Proceedings of the fifth ACM international conference on Web search and data mining, page 33--42. New York, NY, USA, ACM, (2012)
R. Orlik, A. Mitus, and A. Patashinski. Abstract Book of the XXIII IUPAP International Conference on Statistical Physics, Genova, Italy, (9-13 July 2007)