A high-efficiency complex amplitude recovery method based on iterative multiple focusYan Yu, Nan Li, Jipeng Huang, Qiulei Zhang, Juan Zhu, Jinhuan Li, Ning Li and Chunliang WangEur. Phys. J. Plus, 137 5 (2022) 556DOI: https://doi.org/10.1140/epjp/s13360-022-02730-7