To cite ccdrAlgorithm in publications use:

Bryon Aragam, Qing Zhou (2015). Concave Penalized Estimation of Sparse Gaussian Bayesian Networks. Journal of Machine Learning Research, 16, 2273-2338. URL http://jmlr.org/papers/v16/aragam15a.html.

A lot of effort has gone into building and maintaing the ccdrAlgorithm package. Please cite it in all papers where it is used.

Corresponding BibTeX entry:

  @Article{,
    title = {Concave Penalized Estimation of Sparse Gaussian Bayesian
      Networks},
    author = {Bryon Aragam and Qing Zhou},
    journal = {Journal of Machine Learning Research},
    year = {2015},
    volume = {16},
    pages = {2273--2338},
    url = {http://jmlr.org/papers/v16/aragam15a.html},
  }