Toeplitz band matrices with exponentially growing condition numbers. Böttcher, A.; Grudsky, S. — 1999 ELA. The Electronic Journal of Linear Algebra [electronic only]
Block Toeplitz operators with frequency-modulated semi-almost periodic symbols. Böttcher, A.; Grudsky, S.; Spitkovsky, I. — 2003 International Journal of Mathematics and Mathematical Sciences
Toeplitz Operators with Frequency Modulated Semi-Almost Periodic Symbols. A. Böttcher; S. Grudsky — 2001 The journal of Fourier analysis and applications [[Elektronische Ressource]]