Bennett, W. O., Summers, A. P. and Brainerd, E (1999). Comfirmation of the passive exhalation hypothesis for a terrestrial caecilian, Dermophis mexicanus. Copeia 1, 206-.
Boutilier, R (1988). Control of arrhythmic breathing in bimodal breathers: Amphibia. Can. J. Zool 66, 6-.
Boutilier, R. and Toews, D (1977). The effect of progressive hypoxia on respiration in the toad Bufo marinus. J. Exp. Biol 68, 99-.[Abstract/Free Full Text]
Brainerd, E (1994). The evolution of lung\320gill bimodal breathing and the homology of vertebrate respiratory pumps. Am. Zool 34, 289-.
Brainerd, E. L., Ditelberg, J. S. and Bramble, D. M (1993). Lung ventilation in salamanders and the evolution of vertebrate air-breathing mechanism. Biol. J. Linn. Soc 49, 163-.
Brainerd, E. L. and Monroy, J. A (1998). Mechanics of lung ventilation in a large aquatic salamander, Siren lacertina. J. Exp. Biol 201, 673-.
Brett, S. and Shelton, G (1979). Ventilatory mechanisms of the amphibian, Xenopus laevis : the role of the buccal force pump. J. Exp. Biol 80, 251-.[Abstract/Free Full Text]
Carrier, D. R. and Wake, M. H (1995). Mechanism of lung ventilation in the caecilian, Dermophis mexicanus. J. Morph 226, 289-.
de Jongh, H. and Gans, C (1969). On the mechanism of respiration in the bullfrog, Rana catesbeiana : A reassessment. J. Morph 127, 259-.
Funk, G., Webb, C. and Milsom, W (1986). Non-invasive measurement of respiratory tidal volume in aquatic, air-breathing animals. J. Exp. Biol 126, 519-.[Free Full Text]
Gaunt, A. S. and Gans, C (1969). Mechanics of respiration in the snapping turtle, Chelydra serpentina (Linne). J. Morph 128, 195-.
Glass, M. L., Wood, S. C. and Johansen, K (1978). The application of pneumotachography on small unrestrained animals. Comp. Biochem. Physiol 59, 425-.
Guimond, R. W. and Hutchison, V. H (1973). Aquatic respiration: An unusual strategy in the hellbender Cryptobrachus alleganiensis alleganiensis (Daudin). Science 182, 1263-.[Abstract/Free Full Text]
Guimond, R. W. and Hutchison, V. H (1973). Trimodal gas exchange in the large aquatic salamander, Siren lacertina (Linnaeus). Comp. Biochem. Physiol 46, 249-.
Guimond, R. W. and Hutchison, V. H (1974). Aerial and aquatic respiration in the congo eel Amphiuma means (Garden). Respir. Physiol 20, 147-.[Medline]
Hobbes, A. F. T (1967). A comparison of methods of calibrating the pneumotachograph. Brit. J. Anaesth 39, 899-.[Abstract/Free Full Text]
Ito, F. and Watanabe, S (1962). Localization and organization of respiratory neurons in the brainstem of the toad, with reference to activities of slow motor system. Jap. J. Physiol 12, 611-.[Medline]
Jones, R (1982). How toads breathe: control of air flow to and from the lungs by the nares in Bufo marinus. Respir. Physiol 49, 251-.[Medline]
Macintyre, D. and Toews, D (1976). The mechanics of lung ventilation and the effects of hypercapnia on respiration in Bufo marinus. Can. J. Zool 54, 1364-.
McMahon, B. R (1969). A functional analysis of the aquatic and aerial respiratory movements of an African lungfish, Protopterus aethiopicus , with reference to the evolution of the lung-ventilation mechanism in vertebrates. J. Exp. Biol 51, 407-.[Abstract/Free Full Text]
Smatresk, N. J. and Cameron, J. N (1982). Respiration and acid\320base physiology of the spotted gar, a bimodal breather. J. Exp. Biol 96, 263-.[Abstract/Free Full Text]
Smits, A. and Flanagin, J (1994). Bimodal respiration in aquatic and terrestrial apodan amphibians. Am. Zool 34, 247-.
Toews, D. and Macintyre, D (1978). Respiration and circulation in an apodan amphibian. Can. J. Zool 56, 998-.
Vitalis, T. and Shelton, G (1990). Breathing in Rana pipiens : the mechanism of ventilation. J. Exp. Biol 154, 537-.[Abstract/Free Full Text]
West, N. H. and Jones, D. R (1975). Breathing movements in the frog Rana pipiens . I. The mechanical events associated with lung and buccal ventilation. Can. J. Zool 53, 332-.[Medline]