Rice, John Richard. <br/><br/>
The approximation of functions. 

 - Reading, MA :  Addison-Wesley,  [1964] 
<br/><br/>Bibliography: p. 193-200. 
<br/><br/>v. 1. Linear theory. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Numerical analysis.<br/>Functions.<br/>Numerical calculations.