1. Ashworth CT, Stembridge VA, Luibel FJ (1961) A study of basement membranes of normal epithelium, carcinoma in situ and invasive carcinoma of the uterine cervix utilizing electron microscopy and histochemical methods. Acty Cytol (Phil) 5:369–382
2. Bajardi F (1961) Symposium on malignant cervical lesions. (Nomenclature of the atypical epithelium). Acty Cytol (Phil) 5:344–348
3. Berger J, Neiditsch LA, Mumprecht E (1958) Elektronenoptische Untersuchungen von Plattenepithelveränderungen der Portio vaginalis uteri. Geburtsh u Frauenheilkd 18:510–516
4. Bonilla-Musóles F (1969) Microscopía electrónica del cervix uterino. Distribuye Editorial FACTA
5. Burghardt E (1972) Histologische Frühdiagnose des Zervixkrebses. Thieme, Stuttgart