1. Austin, C. R. (1959). Fertilization and development of the egg. In Reproduction in Domestic Animals (ed., Cole and Cupps), 1, 399–432. Acad. Press, New York and London.
2. Austin, C. R. (1961). The Mammalian Egg. Blackwell, Oxford.
3. Balfour-Lynn, S. (1956). Parthenogenesis in human beings. Lancet, 1, 1071–1072.
4. Beatty, R. A. (1957). Parthenogenesis and Polyploidy in Mammalian Development. Cambridge Univ. Press, London.
5. Bickers, W. (1960). Sperm migration and uterine contractions. Fertil. & Steril., 11, 286–290.