1. WB Saunders Philadelphia PA USA Immunology JA Bellanti JB Robbins JA Bellanti 1985
2. Cluster sampling to assess immunization coverage: a review of experience with a simplified method;Henderson RH;Bull WHO,1982
3. Patterns of transmission in measles outbreaks in the United States, 1985-86;Markowitz LE;N Engl J Med,1989
4. Center for Disease Control. Measles - Dade County FL USA MMWR. 1987;36:45-8.
5. Center for Disease Control. Measles - New Jersey USA MMWR. 1986;35:213-5.