Rigorous atomic and molecular physics   
ed. by G. Velo , A. S. Wightman 
 - New york  Plenum Press  1981 
 - viii, 495p. 
 - NATO advanced institute series  Series B  V.74 .
<br/><br/> Series B-Physics 
<br/><br/><label>ISBN: </label>0306408295 
<br/><br/><label>Dewey Class. No.: </label>539.7  / N812