p> 17. Renaud B. Ventilatory effects of continues epidural infusion of fentanil// Anaesth. Analg. - 1988.-Vol. 10. - P. 971-975. p> 18. Stromskag K. E., Steen P. A. Comparison of interpleural and epidural anaesthesia for extracorporal shock wave lithotripsy// Anaesth. Analg. - 1988.-Vol. 11. - P. 1181 - 1183. p> 19. Zanz M. C. f Panhans Nisei H. C., Kruscher H. Regional Anaesthesia. Jear Book: Medical Publichers// Wolf Medical, 1988. br/>