1. Congenital absence of pedicle from cervical vertebra;Hadley;American Journal of Roentgenology and Radium Therapy,1946
2. Congenital absence of a cervical vertebral pedicle;McLoughlin;Journal of the Canadian Association of Radiologists,1972
3. The absent cervical pedicle syndrome: a case in childhood;Oestreich;American Journal of Roentgenology and Radium Therapy,1969
4. Congenital absence of pedicle and superior facet from cervical vertebra;Steinbach;Radiology,1952
5. Congenital absence of pedicle in cervical spine;Wilson;American Journal of Roentgenology Radium Therapy and Nuclear Medicine,1966