1. Epidural morphine in the treatment of pain;Behar;Lancet,1979
2. Morphine and alfentanil permeability through the spinal dura, arachnoid and pia mater of dogs and monkeys;Bernards;Anesthesiology,1990
3. Radicular artery blood flow does not redistribute fentanyl from the epidural space to the spinal cord;Bernards;Anesthesiology,1994
4. Bonath KH, Saleh AS: Long term pain treatment in the dog by peridural morphine. In Proceedings of the Second International Congress of Veterinary Anesthesia, Sacramento, 1985, p 161
5. Bonath KH, Schaller G, Worm F: New methods of peridural anesthesia in the dog. In Proceedings of the Second International Congress of Veterinary Anesthesia, Sacramento, 1985, pp 153–154