Krasnosel'skii', M. A. <br/><br/>
Positive solutions of operator equations 

 - Groningen  P.Noordhoff LTD.  1964 
 - 381p. 
<br/><br/><label>Subjects--Uniform Titles: </label><br/>Operator Equations
<br/><br/><label>Dewey Class. No.: </label>515.7  / K95P