Weinberger, Hans F.
Variational methods for eigenvalue approximation
Society for Industrial and Applied Mathematics, 1974
 eBooks
Theory of approximation with application
edited by Alan G. Law, Badri N. Sahney
Academic Press, 1976
 Buku Teks
Neamtu, Marian
Approximation theory XIII: san antonio 2010
[Springer, ], 2012
 eBooks
Zienkiewicz, Olek C.
Finite elements and approximation
John Wiley & Sons, 1983
 Buku Teks
Zienkiewicz, Olek C.
Finite elements and approximation
John Wiley & Sons, 1983
 Buku Teks