@article{WETZEL07_ACP,
   author = "G. Wetzel and A. Bracher and B. Funke and F. Goutail and
             F. Hendrick and J.-C. Lambert and S. Mikuteit and C. Piccolo
             and M. Pirre and A. Bazureau and C. Belotti and T. Blumenstock
             and M. De Mazi{\`e}re and H. Fischer and N. Huret and D. Ionov
             M. L{\'o}pez-Puertas and G. Maucher and H. Oelhaf and
             J.-P. Pommereau and R. Ruhnke and M. Sinnhuber and G. Stiller
             and M. {Van Roozendael} and G. Zhang",
   title  = "Validation of {MIPAS-ENVISAT NO}$_2$ operational data",
   journal= "Atmos. Chem. Phys.",
   volume = "7",
   pages  = "3261-3284",
   year   = "2007"   }