Pshenichnyi, B.N. <br/><br/>
Necessary conditions for an extremum 

 - New York  Marcel Dekker  1971 
 - xviii,230p.  23cm. 
<br/><br/><label>ISBN: </label>082471556X 
<br/><br/><label>Subjects--Uniform Titles: </label><br/>Functional analysis
<br/><br/><label>Dewey Class. No.: </label>515.7  / P91N