1. Maternal bearing down efforts - another fetal risk?;Basell;Obstetrics and Gynecology,1980
2. The diagnostic significance of the intrauterine pressure. I;Csapo;Obstetrics and Gynecology Survey,1970
3. Pressures on the human fetus during labour;Hashimoto;Acta Neonatologica Japonica,1979
4. Compression of the fetal brain;Kelly;American Journal of Obstetrics and Gynecology,1963
5. An assessment of the compression and traction forces of obstetrical forceps;Kelly;American Journal of Obstetrics and Gynecology,1966