1. Atlas of exfoliative cytology;Papanicolaou,1954
2. The abnormal pap smear;Bibbo;Female Patient,1983
3. Cytologic and histologic outcome following an atypical cervical smear;Hulka;Am J Obstet Gynecol,1968
4. Atypical or suspicious cervical smears—an aggressive diagnostic approach;Nyirjesy;JAMA,1972
5. Non-diagnostic squamous atypia in cervico-vaginal cytology as a risk factor for early neoplasia;Melamed;Acta Cytol,1976