Dunford, N & Schwartz, J.T <br/><br/>
Linear operators part II  spectral theory, self adjoint operators in hilbert space 
N. Dunford & J.T. Schwartz 
 - New York  Interscience Publishers  1963 
 - ix  859-1923 
 - Pure & applied mathematics 7 .
<br/><br/><label>ISBN: </label>0470226382 
<br/><br/><label>Dewey Class. No.: </label>5.03  / DUNF