Bibikov Yuri N <br/><br/>
Local theory of nonlinear analytic ordinary differential equations. 

 -  1979 
<br/><br/><label>Standard No.: </label>121905 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Dewey Class. No.: </label>B331,2, L9