1. Adrian ED (1933) Afferent impulses in the vagus and their effect on respiration. J Physiol (Lond.) 79:332
2. Alt E, Heinz M, Hirgstetter C, Emslander P, Daum S, Blömer H (1987) Control of pacemaker rate by impedance-based respiratory minute ventilation. Chest 92: 247
3. Aquilina M, Liverani L, Giulianini G, Musi P (1988) Data processing of transthoracic impedance signal (TIS) to optimize its relationship with physical activity in respiratory dependent pacemakers. PACE 11:809
4. Bartels H (1975) Gaswechsel (Atmung) In: Keidel WD (Hrsg) Kurzgefaßtes Lehrbuch der Physiologie. Thieme, Stuttgart
5. Bouckaert JJ, Dautrebande L, Heymans C (1931) Sinus caroticus and respiratory reflexes. Influence of CO2, hydrogen ion concentration and anoxaemia. J Physiol (Lond.)71, v–vi