1. An iteration method for the solution of the eigenvalue problem of linear differential and integral operators;Lanczos;Journal of Research of the National Bureau of Standards,1950
2. A method of gradients for the calculation of the characteristic roots and vectors of a real symmetric matrix;Hestenes;Journal of Research of the National Bureau of Standards,1951
3. How far should you go with the Lanczos process;Kahan,1976
4. A block generalization of the symmetric s-step Lanczos algorithm;Cullum,1974
5. J. Lewis (1977), Algorithms for sparse matrix eigenvalue problems, Ph.D. dissertation, Stanford University, Stanford, California.