To cite biomartr in publications please use:

  Hajk-Georg Drost, Jerzy Paszkowski. Biomartr: genomic data retrieval
  with R. Bioinformatics (2017).
  https://doi.org/10.1093/bioinformatics/btw821

A BibTeX entry for LaTeX users is

  @Manual{,
    entry = {Article},
    title = {Biomartr: genomic data retrieval with R},
    author = {Drost Hajk-Georg and Paszkowski Jerzy},
    journal = {Bioinformatics},
    year = {2017},
    url = {https://academic.oup.com/bioinformatics/article/doi/10.1093/bioinformatics/btw821/2931816/Biomartr-genomic-data-retrieval-with-R},
  }