D. Raphael. Health Promotion Journal of Australia: Official Journal of Australian Association of Health Promotion Professionals, 17 (3):
167--170(December 2006)PMID: 17176228.
M. Domeika, A. Savicheva, E. Sokolovskiy, R. Ballard, and M. Unemo. Euro Surveillance: Bulletin Européen Sur Les Maladies Transmissibles = European Communicable Disease Bulletin, 12 (12):
E071206.3(December 2007)PMID: 18067849.