1. “Viral Infections of Man”;Black,1982
2. Centers for Disease Control (1982) Morbidity and Mortality Weekly Report 31, No. 38.
3. Centers for Disease Control (1983a) Morbidity and Mortality Weekly Report 31, No. 52.
4. Centers for Disease Control (1983b) Morbidity and Mortality Weekly Report 32, No. 8.
5. Centers for Disease Control (1983c) Morbidity and Mortality Weekly Report 32, No. 4.