1. Median maxillary anterior alveolar cleft;Gier;Oral Surg,1967
2. Oral roentgenographic diagnosis;Stafne,1958
3. Etiology and incidence of median maxillary anterior alveolar cleft;Stout;IADR Program and Abstracts,1968
4. The median cleft face syndrome;DeMyer;Neurology,1967
5. Rare clefts of the face;Fogh-Anderson;Acta Chir Scand,1965