Rouche, N <br/><br/>
Stability theory by Liapunov's direct mehtod 

 - New York  Springer-Verlag  1977 
 - xii, 396 p. 
<br/><br/><label>ISBN: </label> DM35.3 
<br/><br/><label>Dewey Class. No.: </label>515.352 A58R: S