Mikhlin, S.G.
Approximation on a rectangular grid : with application to finite element methods and other problems = Approksimatcija na kubicheskoj setke
Sijthoff & Noordhoff, 1979
 Buku Teks
Neamtu, Marian
Approximation theory XIII: san antonio 2010
[Springer, ], 2012
 eBooks
Theory of approximation with application
edited by Alan G. Law, Badri N. Sahney
Academic Press, 1976
 Buku Teks SO
Weinberger, Hans F.
Variational methods for eigenvalue approximation
Society for Industrial and Applied Mathematics, 1974
 eBooks
Progress in approximation theory: an international perspective
edited by A.A. Gonchar and E.B. Staff
Springer-Verlag, 1992
 Buku Teks SO