@article{HEGGLIN20_SPARC,
   author = "M. Hegglin and S. Tegtmeier and J. Anderson and A. E. Bourassa and
             S. Brohede and D. Degenstein and L. Froidevaux and B. Funke and 
             J. Gille and Y. Kasai and E. Kyr{\"o}l{\"a} and J. Lumpe and 
             D. Murtagh and J. L. Neu and K. P{\'e}rot and E. Remsberg and 
             A. Rozanov and M. Toohey and J. Urban and T. von Clarmann and 
             K. A. Walker and H.-J. Wang and C. Arosio and R. Damadeo and 
             R. Fuller and G. Lingenfelser and C. McLinden and D. Pendlebury 
             and C. Roth and N. J. Ryan and C. Sioris and L. Smith and 
             K. Weigel",
   title  = "Overview and update of the {SPARC D}ata {I}nitiative: 
             comparison of stratospheric composition measurements from 
             satellite limb sounders",
   journal= "Earth Syst. Sci. Data",
   volume = "13",
   number = "5",
   pages  = "1855-1903",
   doi    = "10.5194/essd-13-1855-2021",
   url    = "https://doi.org/10.5194/essd-13-1855-2021",
   year   = "2020"   }