A phase retrieval framework based on the multigrid method to alleviate the twin‐image problem.Published in:Journal of Applied Crystallography, 2023, v. 56, n. 1, p. 71, doi. 10.1107/S1600576722010792By:Ou, Jiyang;Xie, Hongsheng;Zhao, Chunli;Li, Lei;Tao, JunPublication type:Article