To cite PubMatrixR in publications, please use:

  Becker KG, Hosack DA, Dennis G Jr, Lempicki RA, Bright TJ, Cheadle C,
  Engel J (2003). "PubMatrix: a tool for multiplex literature mining."
  BMC Bioinformatics, 4, 61. doi:10.1186/1471-2105-4-61. PMID:
  14667255; PMCID: PMC317283.

A BibTeX entry for LaTeX users is

  @Article{,
    title = {PubMatrix: a tool for multiplex literature mining},
    author = {K. G. Becker and D. A. Hosack and G. Jr Dennis and R. A. Lempicki and T. J. Bright and C. Cheadle and J. Engel},
    journal = {BMC Bioinformatics},
    year = {2003},
    month = {Dec},
    day = {10},
    volume = {4},
    pages = {61},
    doi = {10.1186/1471-2105-4-61},
    pubmedid = {14667255},
    url = {https://pmc.ncbi.nlm.nih.gov/articles/PMC317283/},
  }