Lusternik, L A <br/><br/>
Elements of functional analyusis 

 - 3rd ed. 
 - Delhi  Hindustan publishing corporation  1985 
 - xvi, 360 p. 
<br/><br/><label>ISBN: </label> RS200 
<br/><br/><label>Dewey Class. No.: </label>515.7 L976E