@article{TEGTMEIER16_SDI,
   author = "S. Tegtmeier and M. I. Hegglin and J. Anderson and B. Funke
             and J. Gille and A. Jones and L. Smith and T. von Clarmann
             and K. A. Walker",
   title  = "The {SPARC D}ata {I}nitiative: comparisons of {CFC}-11,
             {CFC}-12, {HF} and {SF}$_6$ climatologies from international
             satellite limb sounders ",
   journal= "Earth Syst. Sci. Data",
   volume = "8",
   number = "1",
   doi    = "10.5194/essd-8-61-2016",
   pages  = "61-78",
   year   = "2016"   }