Kielhofer, Hansjosg <br/><br/>
Bifurcation theory  an introduction with applications to P.D.E.'s 
Hansjosg Kielhofer 
 - Newyork  Springer  2004 
 - vii,346p. 
 - (Applied mathematical series 156.) .
<br/><br/><label>ISBN: </label>387404015  E79.95