1. Muscle-bound feet;Hibbs;NY Med. J,1914
2. Hypermobile flatfoot with short tendo Achilles;Harris;J. Bone Joint Surg,1948
3. The congenitally short gastrocnemius.;Root,1969
4. A conceptual look at rearfoot motion;Morris;Clin. Podiatr. Med. Surg,1994
5. Comprehensive Textbook of Foot Surgery,1987