1. Nasopalatine cysts;Abrams;Oral. Surg.,1963
2. Persisting bilateral nasopalatine ducts: A developmental anomaly;Allard;J. Oral Surg.,1982
3. Observations on the incisive canaliculi and nasopalatine ducts;Bellairs;Br. Dent. J.,1951
4. Palatal opening of the nasopalatine duct: A developmental anomaly;Buchner;J. Oral Surg.,1972
5. Nasopalatine duct structures and peculiar bony pattern observed in anterior maxillary region;Burket;Arch. Pathol.,1937