1. Borthwick , D. Uribe , A. On the pseudospectra of Berezin-Toeplitz operators
2. Non-self-adjoint harmonic oscillator, compact semigroups and pseudospectra;Boulton;J Operator Theory,2002
3. Wave packet pseudomodes of twisted Toeplitz matrices;Chapman;Comm Pure Appl Math
4. Pseudo-spectra, the harmonic oscillator and complex resonances;Davies;R Soc Lond Proc Ser A Math Phys Eng Sci,1999
5. Semi-classical states for non-self-adjoint Schrödinger operators;Davies;Comm Math Phys,1999