To cite SLOPE in publications use:

Malgorzata Bogdan, Ewout van den Berg, Chiara Sabatti, Weijie Su, Emmanuel Candes (2014). "SLOPE -- Adaptive Variable Selection via Convex Optimization." arXiv:1407.3824.

Corresponding BibTeX entry:

  @Article{,
    title = {SLOPE -- Adaptive Variable Selection via Convex
      Optimization},
    author = {Malgorzata Bogdan and Ewout van den Berg and Chiara
      Sabatti and Weijie Su and Emmanuel Candes},
    journal = {arXiv:1407.3824},
    year = {2014},
    url = {http://arxiv.org/abs/1407.3824},
  }