1. Efficiency of cryosurgical treatment of severe cervical intraepithelial neoplasia;Creasman;Obstet. Gynecol.,1973
2. Colposcopy as a diagnostic tool in the investigation of cervical neoplasias;Donohue;Amer. J. Obstet. Gynecol.,1972
3. Conization as treatment of carcinoma in situ of the uterine cervix;Ahlgren;Obstet. Gynecol.,1975
4. The correlation between colposcopical grading, directed punch biopsy and conization;Boelter;Amer. J. Obstet. Cynecol.,1971