Ferguson, A. (1981) Orthopaedic surgery in infancy and childhood. 5th Edition, Williams and Wilkins, Baltimore, 292-294.
 Rossman, M. and Jequier, S. (1982) The double-headed femur. Clinical Orthopaedics and Related Research, 162, 170-172.
 Salter, R., Kostuik, J. and Dallas, S. (1969) Avascular necrosis of the femoral head as a complication of the dislocation of the hip in young children. A clinical and experimental investigation. Canadian Journal of Surgery, 12, 44.
 Rudicel, S., Lee, K. and Pelker, R. (1985) Dimensions of the rabbit femur during growth. American Journal of Veterinary Research, 46, 289-299.
 Heikel, H. (1960) On ossification and growth of certain bones of the rabbit; with a comparison of the skeletal age in the rabbit and in man. Acta Orthopaedica Scandinavica, 39, 171-185.
 Osuji, C.K., Chafik, D. and Moseley, C.F. (2009) Unilateral proximal bifurcation of the femur. Journal of Pediatric Orthopaedics, 29, 695-697.