F. L. Bauer; C. T. Fike (1960), «Norms and exclusion theorems», Numer. Math., 2: 137–141, doi:10.1007/bf01386217
S.C. Eisenstat; I.C.F. Ipsen (1998), «Relative Perturbation Results for Eigenvalues and Eigenvectors of Diagonalisable Matrices», BIT, 38 (3): 502–9, doi:10.1007/bf02510256
Neymeyr, K. (2006), «A geometric theory for preconditioned inverse iteration IV: On the fastest convergence cases.», Linear Algebra Appl., 415 (1): 114–139, doi:10.1016/j.laa.2005.06.022
Chu, Moody T. (1988), «A Note on the Homotopy Method for Linear Algebraic Eigenvalue Problems», Linear Algebra Appl., 105: 225–236, doi:10.1016/0024-3795(88)90015-8
