1. Early stages of human development;Hamilton;Ann R Coll Surg Engl,1949
2. On the preimplantation stages of the human ovum: a description of four normal and four abnormal specimens ranging from the second to the fifth day of development;Hertig;Contrib Embryol Carneg Inst,1954
3. Thirty-four fertilized human ova, good, bad and indifferent, recovered from 210 women of known fertility: a study of biologic wastage in early human pregnancy;Hertig;Pediatrics,1959
4. Fertilization and early development of human ova in the tubes;Khvatov;Anat Rec,1960
5. The human egg in the pronuclear stage;Dickmann;Anat Rec,1965