Cools, KristofKristofCoolsAndriulli, F.P.F.P.AndriulliOlyslager, FrankFrankOlyslagerMichielssen, E.E.Michielssen2021-10-162021-10-162007-06https://imec-publications.be/handle/20.500.12860/11900Calderon preconditioned time-domain integral equation solversProceedings paper