1. Absence hereditare d'une phalange aux doigts et aux orteils;Mercier;Bull Soc Anat Paris,1838
2. Hereditary anchylosis of the proximal phalangeal joints (symphalangism);Cushing;Genetics,1916
3. Symphalangism: genetic and clinical aspects;Strasburger;Johns Hopkins Hosp Bull,1965
4. The care of congenital hand anomalies;Flatt,1977
5. Rigid digits or symphalangism;Flatt;Hand,1975