Langefors, Borje. <br/><br/>
Information systems architecture / 
Borje Langefors and Bo Sundgren. 
 - New York :  Petrocelli/Charter,  1975. 
 - 366 p. :  ill. ;  24 cm. 
<br/><br/> Includes index. 
<br/><br/>p. 361-363. 
<br/><br/><label>ISBN: </label>0884053008 
<br/><br/><label>LCCN: </label>75-005521 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Information storage and retrieval systems.<br/>Electronic data processing.