Vegter, Gert <br/><br/>
Bifurcations of gradient vector fields. 

 - Groningen:  Rijksuniversiteit Groningen,  1983. 
 - 248 p.: 
<br/><br/> In Periodical Room. 
<br/><br/>Thesis--Groningen. 
<br/><br/><label>Dewey Class. No.: </label>515.63  / V424b