Ting-Ting Feng, Gang Wu & Ting-Ting Xu. (1970). An Inexact Shift-and-Invert Arnoldi Algorithm for Large Non-Hermitian Generalised Toeplitz Eigenproblems. East Asian Journal on Applied Mathematics. 5 (2). 160-175. doi:10.4208/eajam.010914.130415a