International Journal of Modern Physics B. 

 - Singapore  World Scientific  1987 
<br/><br/><label>ISSN: </label>5640 
<br/><br/><label>Standard No.: </label>
<br/><br/><label>LC Class. No.: </label>01IJOMPB     
<br/><br/><label>GPO Item No.: </label>1005640