Bernfeld, stephen R <br/><br/>
Introduction to nonlinear boundary value problems 

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 -  New York  Academic, 1974 
 - xi, 386 p.   
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<br/><br/><label>Subjects--Index Terms: </label>Functional equations  Linear equations  Partial differential equations  Dynamical systems 
<br/><br/><label>Dewey Class. No.: </label>517.954