1. Osteoblastoma benigno del esfenoides;Contreras;Patología,1968
2. Bone tumors;Dahlin,1978
3. Benign osteoblastoma of vertebral column and skull;Doron;Surg Neurol,1977
4. Benign osteoblastoma of the ethmoid bone;Freedman;Am J Clin Pathol,1975
5. Bone tumors;Huvos,1979