Korovkin, P. P., <br/><br/>
Inequalities / 
translated from the Russian by Halina Moss. Translation editor: Ian N. Sneddon. 
 - Oxford :  Pergamon-Press,  1961. 
 - vii, 60 p. 
 - Popular lectures in mathematics series, v. 6. .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Differential inequalities.<br/>Inequalities (Mathematics).