Barut , Asim O. <br/><br/>
Theory of  group represenations and applications 
Asim O.Barut and Ryszard Raczka 
 - 2nd rev.ed. 
 - Singapore  World Scientific  c1986 
 - xix,717p.;  22cm. 
<br/><br/><label>Dewey Class. No.: </label>512.22  /  BAR