1. Lenfant C (ed) : Lung 13iology in Health and Disease. New York and Basel, Marcel Dekker Inc , 1977 , vols 2 - 4
2. Vagal sensory receptors and their reflex effects.
3. Widdicombe JG: Respiratory reflexes. In Handbook of Physiology sec 3. Respiration edited by Fenn WO Rahn H. Washington DC American Physiological Society 1964 p 585
4. Widdicombe JG: Reflex control of breathing. In MTP International Review of Science Physiology Series 1 vol 2 Respiratory Physiology edited by Widdicombe JG. Baltimore University Park Press 1974 p 273
5. Die Selbsteuerung der Athmung durch den Nervus Vagus Sitzber;Hering E;Akad Wiss Wien,1868