Richard S. Varga, Hermite interpolation-type Ritz methods for two-point boundary value problems, Numerical Solution of Partial differential Equations (J. H. Bramble, ed. ), pp. 365-373, Academic Press, Inc., New York, 1966. MR 34, 5302. Zbl. 161, p. 357.

1. Introduction

In the important work of Bramble and Hubbard [1], higher-order difference
approximations of order *O(h ^{4})* are used at interior mesh points
for two-point self-adjoint second-order boundary value problems, while
lower-order difference approximations are used near the boundary points. The
resulting matrix equations are such that the associated matrices