Seventeen years of carbon dioxide enrichment of sour orange trees: final results Kimball, Bruce A. ; Idso, Sherwood B. ; Johnson, Stephanie ; Rillig, Matthias C. Abstract Publication: Global Change Biology Pub Date: October 2007 DOI: 10.1111/j.1365-2486.2007.01430.x Bibcode: 2007GCBio..13.2171K