D. Tappe, H. Claus, J. Kern, A. Marzinzig, M. Frosch, und M. Abele-Horn. European Journal of Clinical Microbiology & Infectious Diseases: Official Publication of the European Society of Clinical Microbiology, 25 (1):
31--34(Januar 2006)PMID: 16418831.
S. Shehab, N. Keller, A. Barkay, L. Leitner, A. Leventhal, und C. Block. European Journal of Clinical Microbiology & Infectious Diseases: Official Publication of the European Society of Clinical Microbiology, 17 (11):
749--53(November 1998)PMID: 9923513.