To cite the ReactomeGSA in publications use:

  A Grentner, E Ragueneau, C Gong, A Prinz, S Gansberger, I Oyarzun, H
  Hermjakob, J Griss (2024) ReactomeGSA: new features to simplify
  public data reuse. Bioinformatics 40(6):btae338. doi:
  10.1093/bioinformatics/btae338

A BibTeX entry for LaTeX users is

  @Article{,
    title = {ReactomeGSA: new features to simplify public data reuse},
    author = {Alexander Grentner and Eliot Ragueneau and Chuqiao Gong and Adrian Prinz and Sabina Gansberger and Inigo Oyarzun and Henning Hermjakob and Johannes Griss},
    journal = {Bioinformatics},
    year = {2024},
    doi = {10.1093/bioinformatics/btae338},
    url = {https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/38806182/},
  }

  J Griss, G Viteri, K Sidiropoulos, V Nguyen, A Fabregat, and H
  Hermjakob (2020) ReactomeGSA - Efficient Multi-Omics Comparative
  Pathway Analysis. Mol Cell Proteomics 19(12):2115-2125. doi:
  10.1074/mcp.TIR120.002155

A BibTeX entry for LaTeX users is

  @Article{,
    title = {ReactomeGSA - Efficient Multi-Omics Comparative Pathway Analysis},
    author = {Johannes Griss and Guilherme Viteri and Konstantinos Sidiropoulos and Vy Nguyen and Antonio Fabregat and Henning Hermjakob},
    journal = {Mol Cell Proteomics},
    year = {2020},
    doi = {10.1074/mcp.TIR120.002155},
    url = {https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/32907876/},
  }