To cite GFisher in publications use:

  Zhang, H. and Wu, Z. (2022). The generalized Fisher's combination and
  accurate p-value calculation under dependence. Biometrics, 79(2),
  1159-1172. doi:10.1111/biom.13634

A BibTeX entry for LaTeX users is

  @Article{,
    title = {The generalized Fisher's combination and accurate p-value calculation under dependence},
    author = {Hong Zhang and Zheyang Wu},
    journal = {Biometrics},
    year = {2022},
    volume = {79},
    number = {2},
    pages = {1159--1172},
    doi = {10.1111/biom.13634},
  }