S. Shehab, N. Keller, A. Barkay, L. Leitner, A. Leventhal, и C. Block. European Journal of Clinical Microbiology & Infectious Diseases: Official Publication of the European Society of Clinical Microbiology, 17 (11):
749--53(ноября 1998)PMID: 9923513.
B. Orden, R. Martínez, R. Millán, M. Belloso, и N. Pérez. Clinical Microbiology and Infection: The Official Publication of the European Society of Clinical Microbiology and Infectious Diseases, 9 (12):
1245--1247(декабря 2003)PMID: 14686993.
J. Winstead, D. McKinsey, S. Tasker, M. Groote, и L. Baddour. Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America, 30 (1):
87--94(января 2000)PMID: 10619738.
WHO. Relevé Épidémiologique Hebdomadaire / Section D'hygiène Du Secrétariat De La Société Des Nations = Weekly Epidemiological Record / Health Section of the Secretariat of the League of Nations, 82 (10):
79--87(марта 2007)PMID: 17348094.