International Conference on Artificial intelligence, Varna, Bulgaria, 17-20 September, 1984 <br/><br/>
Introduction to artificial intelligence - Proceedings   
ed. by W. Bibel, B. Petkoff 
 - Amsterdam  North-Holland  1985 
 - xi, 247p. 
<br/><br/><label>ISBN: </label>0444877436 
<br/><br/><label>Dewey Class. No.: </label>006.3  / N854