Los, S., Lobell, D., Hicke, J., Asner, G., Field, C., Tucker, C., & Los, S. (2002). Satellite estimates of productivity and light use efficiency in United States agriculture, 1982-98. Global Change Biology, 8(8), pp. 722-735. doi:10.1046/j.1365-2486.2002.00503.x

Los, Sietse, D.B Lobell, J.A Hicke, G.P Asner, C.B Field, C.J Tucker, and S.O Los. "Satellite Estimates of Productivity and Light Use Efficiency in United States Agriculture, 1982-98." Global Change Biology 8, no. 8 (2002): 722-735.

Los, Sietse, et al. "Satellite Estimates of Productivity and Light Use Efficiency in United States Agriculture, 1982-98." Global Change Biology 8.8 (2002): 722-735.