Mawhin, J <br/><br/>
Topological degree methods in nonlinear boundary value problems 
J. Mawhin 
 - Providence  American Mathematical Society   1979 
 - v  122 
 - CBMS regional conference series in mathematics 40 .
<br/><br/> Expository lectures from the CBMS regional conf. held at harvey mudd college june 9-15, 1977 
<br/><br/><label>ISBN: </label>082181690x 
<br/><br/><label>Dewey Class. No.: </label>6.08  / MAWH