1. Biological Products, U.S.P.H.S. Service Regulations;P.H.S. Publication No. 437,1969
2. Seroimmunity to poliomyelitis in Sweden after the use of inactivated poliovirus vaccine for 10 years;Böttiger;Bulletin of the World Health Organization,1972
3. Attenuated measles virus vaccine dosage study—Cleveland Ohio, 1966;Calafiore;American Journal of Epidemiology,1968
4. Infectivity stability of live measles virus vaccine;Goldner;American Journal of Diseases of Children,1962
5. Measles in children previously vaccinated against measles;Lerman;Journal of the American Medical Association,1971