Prodan, O., A. Chernyshov, I. Korzh, O. Perepechay, V. Podlipentsev, and O. Karpinska. “The Effect of Concomitant Diseases on the Severity of Neurological Syndromes in Patients With Lumbar Spinal Stenosis”. ORTHOPAEDICS TRAUMATOLOGY and PROSTHETICS, no. 1, Oct. 2010, pp. 5–10, doi:10.15674/0030-5987201015-10.