@article{CLARMANN01_JQSRT,
   author = "T. von Clarmann and U. Grabowski and M. Kiefer",
   title  = "On the role of non--random errors in inverse problems in radiative 
             transfer and other applications",
   journal= "J. Quant. Spectrosc. Radiat. Transfer",
   volume = "71",
   number = "1",
   pages  = "39-46",
   year   = "2001"   }