1. O. Axelsson, “Solution of linear systems of equations: Iterative methods”, in: V.A. Barker, ed.,Sparse matrix techniques. (Springer-Verlag, New York, 1976) pp. 1–51.
2. R. Chandra, “Conjugate gradient methods for partial differential equations”, Ph.D. dissertation, Yale University (New Haven, CT, 1978), Also available as Department of Computer Science Research Report No. 129.
3. R. Chandra, S.C. Eisenstat and M.H. Schultz, “The modified conjugate residual method for partial differential equations”, in: R. Vichnevetsky, ed.,Advance in computer methods for partial differential equations II, Proceedings of the Second International Symposium on Computer Methods for Partial Differential Equations, Lehigh University, Bethlehem, PA (International Association for Mathematics and Computers in Simulation, June 1977) pp. 13–19.
4. A.R. Curtis, M.J.D. Powell and J.K. Reid, “On the estimation of sparse Jacobian matrices”,Journal of the Institute of Mathematics and its Applications 13 (1974) 117–119.
5. R.S. Dembo, S.C. Eisenstat and T. Steihaug, “Inexact Newton methods”,SIAM Journal of Numerical Analysis 19 (1982) 400–408.