@incollection{a.k._knapp_success_1999,
	title = {Success of {C}4 photosynthesis in the field: lessons from communities dominated by {C}4 plants},
	publisher = {C4 Plant Biology},
	author = {{A.K. Knapp} and Medina, E.},
	year = {1999},
	keywords = {KNZ}
}