Chow, Shui-Nee and Others <br/><br/>
Normal forms and bifurcation of planar & vector fields   
By Shui-Nee Chow, Chengzhi Li and Duo Wang 
 - Cambridge  Cambridge University Press  1994 
 - viii, 472p. Index, Bibl. 
<br/><br/> "Purchased under NBHM grant for the year 1994-1995"   
<br/><br/><label>Dewey Class. No.: </label>515.35  / C552.NF