Slynko, E. I., V. V. Verbov, V. V. Moroz, and S. S. Shinkaryuk. 2006. “Epidural Varicose of a Lumbar Spine Diagnostics and Surgical Treatment”. Ukrainian Neurosurgical Journal, no. 2 (June):89-98. https://doi.org/10.25305/unj.126816.