Courant, Richard.  <br/><br/>
Differential and Integral Calculus 

 - 2a ed, reimp 
 - London :   Blackie & Son,   1948. 
 - p. 682 
<br/><br/><label>Subjects--Topical Terms: </label><br/>CALCULO DIFERENCIAL<br/>CALCULO INTEGRAL
<br/><br/><label>Universal Decimal Class. No.: </label>517.2/.3