@article{Byrnes2025b, author = {Byrnes, N. and Foreman, Matthew R.}, title = {Perturbing scattering resonances in non-Hermitian systems: a generalized Wigner-Smith operator formulation}, journal = {Newton}, publisher = {Cell Publishing}, volume = {1}, pages = {100194}, year = {2025}, doi={10.1016/j.newton.2025.100194}, }