On the worst-case convergence of MR and CG for symmetric positive definite tridiagonal Toeplitz matrices. Liesen, Jörg; Tichý, Petr — 2005 ETNA. Electronic Transactions on Numerical Analysis [electronic only]
On worst-case GMRES, ideal GMRES, and the polynomial numerical hull of a Jordan block. Tichý, Petr; Liesen, Jörg; Faber, Vance — 2007 ETNA. Electronic Transactions on Numerical Analysis [electronic only]