1. Trendelenburg, F.: Beitrage zu den Operationen an den Luftwegen. Archiv f. Klin. Chir. 12, 121 (1871)
2. Grillo, H.C.: Surgery of the Trachea. Curr. Prob. Surg. Chicago: Year Book Medical Publishers, Inc., July 1970
3. Andrews, M.J., Pearson, F.G.: Incidence and Pathogenesis of Tracheal Injury Following Cuffed Tube Tracheostomy with Assisted Ventilation: Analysis of a Two-Year Prospective Study. Ann. Surg. 173, 249 (1971)
4. Cooper, J.D., Grillo, H.C.: Experimental Production and Prevention of Injury Due to Cuffed Tracheal Tubes. Surg. Gynec. Obst. 139, 1235 (1969)
5. Carroll, R., Hedden, M., Safar, P.: Intratracheal Cuffs: Performance Characteristics. Anesthesiology 31, 275 (1969)