@article{FUNKE08_ACP,
   author = "B. Funke and  M. Garc{\'{\i}}a-Comas and M. L{\'o}pez-Puertas
             and N. Glatthor and G. P. Stiller and T. von Clarmann and
             K. Semeniuk and J. C. McConnell",
   title  = "Enhancement of {N}$_2${O} during the {O}ctober-{N}ovember
             2003 solar proton event",
   journal= "Atmos. Chem. Phys.",
   volume = "8",
   pages  = "3805-3815",
   year   = "2008"   }