%0 Journal Article %A Gangl, Peter %A Sturm, Kevin %T Asymptotic analysis and topological derivative for 3D quasi-linear magnetostatics %J ESAIM: Mathematical Modelling and Numerical Analysis %D 2021 %P S853-S875 %V 55 %N Supplément %I EDP-Sciences %U https://www.numdam.org/articles/10.1051/m2an/2020060/ %R 10.1051/m2an/2020060 %G en %F M2AN_2021__55_S1_S853_0