Hummingbird hovering performance in hyperoxic heliox: effects of body mass and sexv. 1992745–2765
Chai, Peng, Harrykisson, Rajesh, and Dudley, T. R. 1996. "Hummingbird hovering performance in hyperoxic heliox: effects of body mass and sex." Journal of experimental biology, 199 2745–2765.