Elsgolts, L. E. <br/><br/>
Qualitative methods in mathematical analysis/ 
by L.E. Elsgolc. [Translated from the Russian by A.A. Brown and J.M. Danskin]. 
 - Providence, R.I.:  American Mathematical Society,  1964. 
 - vii, 250 p.:  illus.,  24 cm. 
 - Translations of mathematical monographs,  v. 12 .
<br/><br/>Bibliography: p. 231-250. 
<br/><br/><label>LCCN: </label>64016170 //r842 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematical analysis.<br/>Differential equations.
<br/><br/><label>Dewey Class. No.: </label>515  / E49q