1. La mortalidad en los primeros anos de vida en paises de la America Latina;Hugo,1976
2. A model of the socioeconomic determinants of mortality;Bryan,1980
3. The Demography of Tropical Africa;Brass,1968
4. Education as a factor in mortality decline: An examination of Nigerian data;Caldwell;Population Studies,1979
5. Demographic Estimation for Developing Societies;Carrier,1971