1. Intrasacral epidural injection in the treatment of sciatica;Evans;Lancet,1930
2. Intrasacral epidural injection in the treatment of sciatica;Robecchi;Minerva Med,1952
3. L’hydrocortisone en injection locale;Lievre;Rheumatism,1953
4. Intraspinal corticosteroids in the treatment of sciatica;Gardner;Trans Am Neurol Assoc,1961
5. Corticosteroid infiltration of the extradural space;Barry;Ann Phys Med,1962