Keller, C. K.; White, T. M.; O'Brien, R.; Smith, J. L. (2006). "Soil CO2 dynamics and fluxes as affected by tree harvest in an experimental sand ecosystem". Journal of Geophysical Research111 (G3): G03011. doi:10.1029/2005JG000157. Bibcode: 2006JGRG..111.3011K.
Keller, C. K.; White, T. M.; O'Brien, R.; Smith, J. L. (2006). "Soil CO2 dynamics and fluxes as affected by tree harvest in an experimental sand ecosystem". Journal of Geophysical Research111 (G3): G03011. doi:10.1029/2005JG000157. Bibcode: 2006JGRG..111.3011K.