@phdthesis {10.5445/IR/1000146324, AUTHOR = {Kraft, Pascal}, TITLE = {A hierarchical solver for time-harmonic {M}axwell's equations}, SCHOOL = {Karlsruhe Institute of Technology (KIT)}, YEAR = {2022}, MONTH = {apr}, URL = {https://doi.org/10.5445/IR/1000146324}, }