To cite package ‘msaenet’ in publications use:

  Nan Xiao and Qing-Song Xu. (2015). Multi-step adaptive elastic-net:
  reducing false positives in high-dimensional variable selection.
  Journal of Statistical Computation and Simulation 85(18), 3755-3765.

A BibTeX entry for LaTeX users is

  @Article{,
    title = {Multi-step adaptive elastic-net: reducing false positives in high-dimensional variable selection},
    author = {Nan Xiao and Qing-Song Xu},
    journal = {Journal of Statistical Computation and Simulation},
    volume = {85},
    number = {18},
    pages = {3755--3765},
    year = {2015},
    doi = {10.1080/00949655.2015.1016944},
  }