1. Pits of the lip commissures in Caucasoid males;Baker;Oral Surgery, Oral Medicine, Oral Pathology,1966
2. The syndrome of pits in the lower lip and cleft lip and/or palate. Genetic considerations;Cervenka;American Journal of Human Genetics,1967
3. Cleft lip, cleft palate and congenital fistulas of the lower lip. Report of a familial occurrence;Coccia;Oral Surgery, Oral Medicine, Oral Pathology,1967
4. Quelques considerations sur le bec-delievre;Demarquay;Gazette Medicale de Paris,1845
5. Beitrag zur Genese der Gesichtsspalten;Draudt;Deutsche Zeitschrift Chirurgie,1910