1. Longterm effects following infections in pregnancy;Alberman,1977
2. American Public Health Association (1975) Control of Communicable Diseases in Man. 12th Edition, p. 227.
3. Maternal viral infections;Banatvala,1977
4. Rubella vaccines;Best;Lancet,1979
5. Epidemiology—unnecessary smallpox vaccination;British Medical Journal;British Medical Journal,1979