Can Solakoğlu, Selahattin Özyürek, Osman Rodop, Erkan Kaya, and Murat Durusu, “A Rare Cause of Chronic Low Back Pain: Osteoblastoma of the Lumbar Spine”, Archives of Rheumatology, vol. 24, no. 4, pp. 232–233, Dec. 2009.