Knowles, I.W & Lewis, R.T (eds) <br/><br/>
Spectral theory of differential operators  proceedings of the conference held at the university of alabama in birmingham, birmingham, U.S.A., mar 26-28, 1981 
Ed by I.W. Knowles & R.T. Lewis 
 - Amsterdam  North-Holland Pub. Co.  1981 
 - xv  384 
 - North-holland mathematics studies 55 .
<br/><br/><label>ISBN: </label>0 444 862773 
<br/><br/><label>Dewey Class. No.: </label>5.03  / KNOW