Zarantonello, Eduardo H. <br/><br/>
Projections on convex sets in Hilbert space and spectral theory/ 
Eduardo H. Zarantonello. 
 - [1st ed.] 
 - Madison:  Univ. of Wisconsin,  1971. 
 - 181 p. 
<br/><br/><label>Dewey Class. No.: </label>515.7  / Z36p