1. The postoperative lumbar spine: evaluation of epidural scar over a 1-year period;Ross JS;AJNR Am J Neuroradiol,1998
2. Adhesive lumbar arachnoiditis;Ribeiro C;Acta Médica Portuguesa,1998
3. Essentials of Pain Medicine and Regional Anesthesia (2nd edition);Benzon HC,2005
4. CT five years after myelographic diagnosis of lumbar disk herniation;Hurme M;Acta Radiol,1991
5. Postoperative epidural fibrosis;Masopust V;Clin J Pain,2009