The mpralm functionality is described in:

  Myint L, Avramopoulos DG, Goff LA, Hansen KD (2019). “Linear models
  enable powerful differential activity analysis in massively parallel
  reporter assays.” _BMC Genomics_, 209. doi:10.1186/s12864-019-5556-x
  <https://doi.org/10.1186/s12864-019-5556-x>.

A BibTeX entry for LaTeX users is

  @Article{mpralm,
    title = {Linear models enable powerful differential activity analysis in massively parallel reporter assays},
    author = {Leslie Myint and Dimitrios G Avramopoulos and Loyal A Goff and Kasper D. Hansen},
    year = {2019},
    journal = {BMC Genomics},
    pages = {209},
    doi = {10.1186/s12864-019-5556-x},
  }