1. International Perspectives on Women's Reproductive Health
2. E. Hardy, M.J.D. Osis. Women, work and breastfeeding, Legislation and Practice (in Portuguese). 1991; Editora Unicamp: Campinas.
3. Fathalla MF Research needs in human reproduction. In: Research in Human Reproduction Biennial Report 1986–1987. Diczfalusy E, Griffin PD, Khanna J. (eds). See [4].