1. Ahlgren, S.A., Rydholm, A.: Patella cubiti. Report of a case. Acta Orthop. Scand. 46, 931?933 (1975)
2. DeLorimier, A.A., Moehring, H.G., Hannan, J.R.: Clinical roentgenology. Vol. I, Developmental and systematic conditions and local lesions in the extremities. Springfield, Ill.:C.C. Thomas 1954
3. Girdany, B.R., Golden, R.: Centers of ossification of the skeleton. Am. J. Roentgenol. 68, 922?924 (1952)
4. Gunn, D.R.: Patella cubiti. Med. J. Malaysia 19, 314?317 (1965)
5. Habbe, J.E.: Patella cubiti. A report of four cases. Am. J. Roentgenol. 48, 513?526 (1942)