Bojanov B.D. <br/><br/>
Spline Functions and Multivariate  Interpolations. 
Bojanov B.D., Hakopian H.A., Sahakian A..A. 
 - Dordrecht etc.  Kluwer Academic Press  1993 
 - 276 p. 
<br/><br/> Mathematics and Its applications 
<br/><br/><label>Dewey Class. No.: </label>517.518.8