Symposium of institute of mathematical science(7  Madras,1969) <br/><br/>
Symposium on theoretical physics and mathematics  V.10 
ed. by Alladi Ramakrishnan 
 - New york  Plenum Press  1970 
 - xiii, 157p. 
<br/><br/><label>ISBN: </label>306370506 
<br/><br/><label>Dewey Class. No.: </label>530.106  / N66.10 "R"