1. Historical development of cytology as a tool in clinical medicine and in cancer research;Papanicolaou;Acta Unio Int Contra Cancrum,1958
2. Daniel C Babes A Posibilitatea diagnosticului cancerului cu ajutorul frotiului 1927 55
3. Diagnostic du cancer du col uterin par les frottis;Babes;Presse Med,1928
4. A further comment on the contributions of Aurel Babes to cytology and pathology;Douglass;Acta Cytol,1967