1. Heterotopic ossification South;Cope;Med J.,1990
2. Heterotopic ossification: A review of symptoms and treatment;Hinck;Rehab Nurs.,1994
3. Current concepts of bone formation;Bassett;J Bone Joint,1962
4. Quoted by Lubarsch O. Zur kenntniss der kno-chenbildunger in lunge und pleura;Askanazy;Verhandl Deutsch Path Gesellsch.,1901
5. Heterotopic bone formation developing in abdominal scars;Classen;Surgery.,1960