1. Intercostal nerve block;Chung,1992
2. Intercostal nerve block in 4333 patients: Indications, technique and complications;Moore;Anesth Analg,1962
3. Observations on the use of prolonged anesthetic agents in upper abdominal incisions;Zollinger;Surgery,1941
4. A clinical study of the effect of intercostal nerve block with mepercaine in oil following abdominal surgery;Mc Cleery;Surg Gynecol Obstet,1948
5. Continuous pain relief for multiple fractured ribs;O'Kelly;Br J Anaesth,1981