Ozone depletion, ultraviolet radiation and plant life Björn, L. O. ; Callaghan, T. V. ; Gehrke, C. ; Johanson, U. ; Sonesson, M. Abstract Publication: Chemosphere - Global Change Science Pub Date: November 1999 DOI: 10.1016/S1465-9972(99)00038-0 Bibcode: 1999ChGCS...1..449B