@article{diffractiontomographywithhelmholtz,
  title = {Diffraction Tomography with Helmholtz Equation: Efficient and Robust Multigrid-Based Solver},
  author = {Tao Hong and Thanh-an Pham and Eran Treister and Michael Unser},
  year = {2021},
  eprint = {2107.03679},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2107.03679v1},
}