Bifurcation and periodic orbits of vector fields. 

 - Boston   Kluwer Academic. 1993. 
<br/><br/><label>ISBN: </label>0792323920 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Differetiable Dynamic Systems -- Congresses
<br/><br/><label>LC Class. No.: </label>QA 614.8 .B54