1. Mode d'action de la cocaine injecte dons l'escape epidural par le proceda dee canal sacre;Cathelin;C R Soc Biol,1901
2. Intractable sciatica-the sacral epidural injection-an effective method of giving relief;Viner;Can Med Assoc J,1925
3. L'idrocortisone composto F;Robecchi,1952
4. Epidural steroids in the management of low back pain and sciatica of spinal origin;Bogduk,1993
5. Epidural injections in the diagnosis and treatment of low back pain;White;Spine,1980