1. Die angeborenen Fehlbildungen der Menschlichen;Mueller,1937
2. Numerical variations;Blauth,1981
3. Hypoplasia and aplasia of the thumb;Buck-Gramcko,1981
4. Reconstruction of the hypoplastic thumb;Lister;Clin Orthop,1985
5. Management of the thumb hypoplasia;Kleinman;Hand Clin,1990