1. Ashworth, C. T., Luibel, F., and Sanders, E. Epithelium of normal cervix uteri studied with electron microscopy and histochemistry. Am. J. Obstet. Gynecol. 79: 1149, 1960.
2. Averette, H. E., Weinstein, G. 13., and Frost, P. Autoradio-graphic analysis of cell proliferation kinetics in human genital tissues. I. Normal cervix and vagina. Am. J. Obstet. Gynecol. 108: 8, 1970.
3. Chretien, F. C., Gernigon, C., David, G., and Psychoyos, A. The ultrastructure of human cervical mucus under scanning electron microscopy. Fertil. Steril. 24: 746, 1973.
4. Coppleson, M., Pixley, E., and Reid, B. Colposcopy. A Scientific and Practical Approach to the Cervix in Health and Disease, 1st ed. Springfield, Ill., Charles C Thomas, 1971.
5. Coppleson, M., and Reid, B. Preclinical Carcinoma of the Cervix Uteri, 1st ed. Oxford, Pergamon Press, 1967.