1. Austin, C.R., Short, R.V. (eds.): Reproduction in Mammals. Book 1: Germ Cells and Fertilization. Cambridge: Cambridge Univ. Press 1972.
2. Biggers, J.D., Schuetz, A.W. (eds.): Oogenesis. Baltimore: University Park Press; London: Butterworths 1972.
3. Blandau, R.J. (ed.): Aging Gametes, Their Biology and Pathology. Basel-New York: Karger 1975.
4. Chandley, A.: Culture of mammalian oocytes. J. Reprod. Fert. (Suppl.) 14, 1–6 (1971).
5. Channing, C.: Steroidogenesis and morphology of human ovarian cell types in tissue culture. J. Endocrinol. 45, 297–308 (1969).