1. Theory of Ordinary Differential Equations;Coddington,1955
2. P. Deift, T. Nanda, and C. Tomei, Differential equations for the symmetric eigenvalue problem, SIAM J. Numer. Anal. 20 (1), 1–22.
3. P. Deift, L. C. Li, T. Nanda, and C. Tomei, Isospectral flows on band matrices, to appear.
4. The Toda lattice, I;Flaschka;Phys. Rev. B,1974
5. Linear evolution equations of “hyperbolic” type, II;Kato;J. Math. Soc. Japan,1973