Feshchenko S F And Other <br/><br/>
Asymptotic Methods in the theory of Linean Differe 

 - NewYork  American Elsevier           1967 
 - 260p  cm. 
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Dewey Class. No.: </label>B33,1, K7