1) De Troyer A. Respiratory muscle function. In: Rehabilitation of the Patient with Respiratory Disease, eds. Cherniack NS, Altose MD, Homma I, McGraw-Hill New York. pp21-32, 1999 : 21-32.
2)Sahgal V, Tetik S. Respiratory Muscles-Structural Considerations. In: Rehabilitation of the Patient with Respiratory Disease, eds. Cherniack NS, Altose MD, Homma I, McGraw-Hill New York. 33-51, 1999
3)Euler C von. On the role of proprioceptors in special reference to breathing. In: Loaded Breathing, eds. Pengelly LD, Rebuch AS, Cambell EJM, Ontario, 139-154, 1973
4)Euler CV. Brain stem mechanisms for generation and control of breathing pattern. In The Respiratory System in Handbook of Physiology. eds Cherniack NS, Widdicombe JG. Am Physiol Society. 1986 : 1-68.