Benkart G.M. <br/><br/>
Stability in Modules for Classical Lie Algebras -  A Constructive Approach 
Benkart G.M., Britten D.J., Lemire F.W. 
 - Providence  American Mathematical Society  1990 
 - 165 p. 
<br/><br/> Memoirs of the American Mathematical Society, V.85, N.430