Nemytskii, V. V.  1900- <br/><br/>
Qualitative theory of differential equations  
/ V. V. Nemytskii and V. V. Stepanov. 
 - 1a ed. 
 - New York :   Dover Publications,   1989 
 - viii, 522 p. :  il. ;  21 cm. 
<br/><br/> Incluye bibliografía e índice 
<br/><br/><label>ISBN: </label>0486659542 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ecuaciones diferenciales
<br/><br/><label>LC Class. No.: </label>QA371  / N46 1989