@article{TILMES03_GRL,
   author = "S. Tilmes and R. M{\"u}ller and J.-U. Groo{\ss} and M. H{\"o}pfner
             and G. C. Toon and J. M. {Russell III}",
   title  = "Very early chlorine activation and ozone loss in the {A}rctic 
             winter 2002--2003",
   journal= "Geophys. Res. Lett.",
   volume = "30",
   number = "23",
   eid    = "2201",
   doi    = "10.1029/2003GL018079",
   year   = "2003"   }