Kruse/ Robert & others  <br/><br/>
Uncertainity  and  Vagueness  in Knowledge  based  Systems 

 - Berlin  Springer-Verlag  1991 
<br/><br/><br/>ENGLISH 
<br/><br/><label>Subjects--Facted Index Terms: </label><br/>Computer
<br/><br/><label>Dewey Class. No.: </label>6.3  / PAN