International Jr. of Algebra & Computation 

 - USA  World scientific publishing comp.  1999 
<br/><br/><label>ISSN: </label>5939 
<br/><br/><label>Standard No.: </label>
<br/><br/><label>LC Class. No.: </label>01IJOAC      
<br/><br/><label>GPO Item No.: </label>1005939