@ARTICLE{RoedderKern-Isberner97b_Journal_IS,
  AUTHOR = {W. R\"odder and G. Kern-Isberner},
  TITLE  = {Representation and extraction of information by
		  probabilistic logic},
  JOURNAL = {Information Systems},
  VOLUME = {21},		  
  NUMBER = {8},
  PAGES  = {637--652},		  
  YEAR = 1997}