P. C. STEPTOE

Early Stages of Fertilization in vitro of Human Oocytes Matured in vitro

R. Edwards, B. Bavister, P. Steptoe, 1969, Nature.

Fertilization and Cleavage in vitro of Preovulator Human Oocytes

R. Edwards, P. Steptoe, J. Purdy, 1970, Nature.

Human Blastocysts grown in Culture

R. Edwards, P. Steptoe, J. Purdy, 1971, Nature.