Gel'fond, A O <br/><br/>
Calculus of finite differences 

 - New Delhi:   Hindustan Publishing Coporation,   1971 
 - vi, 451p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Difference equations
<br/><br/><label>Subjects--Index Terms: </label>Functional equations 
<br/><br/><label>Universal Decimal Class. No.: </label>517.949  / L1