@article{CLARMANN13_GRL,
   author = "T. von Clarmann and B. Funke and M. L{\'o}pez-Puertas and
             S. Kellmann and A. Linden and G. P. Stiller and C. H. Jackman
             and V. L. Harvey",
   title  = "The solar proton events in 2012 as observed by {MIPAS}",
   journal= "Geophys. Res. Lett.",
   volume = "40",
   doi    = "10.1002/grl.50119",
   pages  = "1-5",
   year   = "2013"   }