Pontriagin, L. S.  1908- <br/><br/>
Ordinary differential equations / 
L. S. Pontryagin; Translated from the Russian by Leonas Kacinskas and Walter B. Counts. 
 - Reading, Mass. :  Addison-Wesley,  1962 
 - 298 p. :  ill. ;  24 cm. 
 - Adiwes international series in mathematics .
<br/><br/><label>LCCN: </label>62-017075 /L/r84 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Differential equations