Approximate solution of impedance matching for nonmagnetic homogeneous absorbing materialsXiangyu Wang, Zuojuan Du, Mingming Hou, Zizhao Ding, Chao Jiang, Xiaozhong Huang and Jianling YueEur. Phys. J. Spec. Top., 231 24 (2022) 4213-4220DOI: https://doi.org/10.1140/epjs/s11734-022-00570-1