Hughes, J. G. <br/><br/>
Object-oriented databases / 
J. G. Hughes 
 - New York :  Prentice-Hall,  1991 
 - 280 p. :  ill. ;  23 cm. 
 - Prentice-Hall international series in computer science .
<br/><br/>p. 253-266 
<br/><br/><label>ISBN: </label>0136298745 
<br/><br/><label>LCCN: </label>91-42371 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Object-oriented databases