Khattak, Azmat Ullah, Ali Haider, Lal Rehman, Ilyas ., and Mushtaq . 2011. “SURGICAL OUTCOME OF RECURRENT LUMBAR DISC HERNIATION: EXPERIENCE WITH 30 PATIENTS”. Journal of Postgraduate Medical Institute 23 (1). https://jpmi.org.pk/index.php/jpmi/article/view/69.