Elsgolts, L; Yankovsky, George, Tr. <br/><br/>
Differential equations and the calculus of variations 

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 - Mir Publishers, Moscow  1970 
 - 440 
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<br/><br/><label>ISBN: </label>  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Differential equations; Analysis; Mathematics
<br/><br/><label>Dewey Class. No.: </label>515.35  ELS-D