Lanczos, Carnelius  1893 <br/><br/>
Linear differential operators 

 - London :   Van Nostrand Reinhold,   1961. 
 - xvi, 564 p. ;   22 cm. 
<br/><br/> Bibliografía, p. xvi 
<br/><br/><label>Subjects--Topical Terms: </label><br/>CALCULO OPERACIONAL
<br/><br/><label>Universal Decimal Class. No.: </label>517.4