Biblio
“Physiological and environmental regulation of interannual variability in CO 2 exchange on rangelands in the western United States”, Global Change Biology, vol. 1610882294126793813523112982911113711414121113109135611409404106148, no. 3, pp. 990 - 1002, 2010.
, “Carbon fluxes on North American rangelands”, Rangeland Ecology & Management, vol. 61, pp. 465–474, 2008.