To cite package ‘BEDMatrix’ in publications use:

  Grueneberg, A., and G. de los Campos, 2019 BGData - A Suite of R
  Packages for Genomic Analysis with Big Data. G3: Genes, Genomes,
  Genetics 9(5): 1377-1383.

A BibTeX entry for LaTeX users is

  @Article{,
    title = {BGData - A Suite of R Packages for Genomic Analysis with Big Data},
    author = {Alexander Grueneberg and Gustavo {de los Campos}},
    journal = {G3: Genes, Genomes, Genetics},
    year = {2019},
    volume = {9},
    number = {5},
    pages = {1377--1383},
    doi = {10.1534/g3.119.400018},
    url = {https://doi.org/10.1534/g3.119.400018},
  }