1. Severe group Y meningococcal disease among civilians;Amico;American Journal of Clinical Pathology,1978
2. Clinical and serological evaluation of purified polysaccharide vaccines prepared from Neisseria meningitidis groups A, C and Y;Farquhar,1977
3. Clinical and serological evaluation of purified polysaccharide vaccines prepared from Neisseria meningitidis groups A, C and Y;Farquhar,1978
4. Guidelines for the manufacture and testing of group A and group C meningococcal polysaccharide vaccines;Food and Drug Administration, Bureau of Biologics, National Institutes of Health, Bethesda, Maryland,1977
5. Meningococcal disease in New York City 1973 to 1978;Galaid;The Journal of the American Medical Association,1980