Symposium on Mathematical Fundamentals of Database Systems ( 2nd  Visegrad, Hungary  1989 ) <br/><br/>
MFDBS '89.   
ed.by J. Demetrovics, B.Thalheim 
 - Berlin  Springer-Verlag  1989 
 - vi, 430p. 
 - Lecture notes in computer science  No.364 .
<br/><br/><label>ISBN: </label>3540512519 
<br/><br/><label>Dewey Class. No.: </label>001.6442  / N892