Backelin, Erik <br/><br/>
On certain categories of representations related to the category O over a semi - simple Lie algebra 
Erik Backelin 
 - Stockholms  Mat. Inst. Stockholms Universitet  1997 
 - 63 p 
<br/><br/> Contine bibliogr. pe capitole 
<br/><br/><label>ISBN: </label>9171536396