1. High-order methods for elliptic equations with variable coefficients
2. and , Discrete Representation of Partial Differential Operators in Errors in Digital Computation, Ed., Academic, New York, 1965, 181-207.
3. Multigrid Bibliography, in Multigrid Methods, Lecture Notes in Mathematics, Vol. 960, Springer-Verlag, New York, 1981, 631.
4. Springer Seri;Hackbusch,1980
5. Ed., Multigrid Methods, Frontiers in Applied Mathematics, Vol. 5, SIAM, Philadelphia, 1987.