@article{BetzBinkowskiHammerschmidtetal.2023, author = {Fridtjof Betz and Felix Binkowski and Martin Hammerschmidt and Lin Zschiedrich and Sven Burger}, title = {Resonance expansion of quadratic quantities with regularized quasinormal modes}, journal = {Phys. Status Solidi A}, volume = {220}, pages = {2200892}, doi = {10.1002/pssa.202200892}, year = {2023}, }