@article{HOEPFNER06_ACP_I,
   author = "M. H{\"o}pfner and B. P. Luo and P. Massoli and F. Cairo and
             R. Spang and M. Snels and G. {Di Donfrancesco} and G. P. Stiller
             and T. von Clarmann and H. Fischer and U. Biermann",
   title  = "Spectroscopic evidence for $\beta$--{NAT}, {STS}, and ice in
             {MIPAS} infrared limb emission measurements of polar
             stratospheric clouds",
   journal= "Atmos. Chem. Phys.",
   volume = "6",
   pages  = "1201-1219",
   year   = "2006"   }