Journal article
Basic avian pulmonary design and flow-through ventilation in non-avian theropod dinosaurs
Citation
O'Connor, P. M.; Claessens, L. P. A. M. (2005). Basic avian pulmonary design and flow-through ventilation in non-avian theropod dinosaurs. Nature 436(7048): 253-256. doi:10.1038/nature03716