Lohwater, A J, ed.,series Pontryagin, L S <br/><br/>
Ordinary differential equations 

 - Massachusetts  Addison-Wesley publishing company, inc  1962 
 - vi, 298 p.; 24cm. 
 - Adiwes international series in mathematics .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Equations<br/>Statistics