@article{Allen2008,
  author    = {I. M. Allen},
  title     = {Tumours involving the cauda equina : a review of their clinical features and differential diagnosis},
  journal   = {The journal of neurology and psychopathology},
  volume    = {s1-11},
  pages     = {111 -- 143},
  doi       = {10.1136/jnnp.s1-11.42.111},
  year      = {2008},
}