H. E. Fox, Kareiva, P., Silliman, B., Hitt, J., Lytle, D. A., Halpern, B. S., Hawkes, C. V., Lawler, J., Neel, M., Olden, J. D., Schlaepfer, M. A., Smith, K., and Tallis, H.,
“Why do we fly? Ecologists' sins of emission”,
Frontiers in Ecology and the Environment, vol. 7, pp. 294-296, 2009.