E. Bertin, K. Martens, O. Dauchot, and M. Droz. Abstract Book of the XXIII IUPAP International Conference on Statistical Physics, Genova, Italy, (9-13 July 2007)
J. Top, N. Banga, R. Hayes, R. Willems, M. Bonten, and M. Hayden. Clinical Microbiology and Infection: The Official Publication of the European Society of Clinical Microbiology and Infectious Diseases, 14 (4):
363--369(April 2008)PMID: 18261124.