@article{PALAZZI11_ACP,
   author = "E. Palazzi and F. Fierli and G. P. Stiller and J. Urban",
   title  = "Probability density functions of long-lived tracer observations
             from satellite in the subtropical barrier region: {d}ata
             intercomparison",
   journal= "Atmos. Chem. Phys.",
   volume = "11",
   pages  = "10579-10598",
   year   = "2011"   }