To cite the dops package in publications use:

Rusch T, de Leeuw J, Mair P (2019). cops: Cluster Optimized Proximity Scaling. R package version 1.0-2.

If cops() or cordillera() is used, please cite:

Rusch T, Mair P, Hornik K (2015). “COPS: Cluster Optimized Proximity Scaling.” Technical Report 2015/1, WU Vienna University of Economics and Business, Vienna, Austria. http://epub.wu.ac.at/4476/.

If powerStressMin() is used, please cite:

de Leeuw J (2014). “Minimizing rstress using nested majorization.” UCLA, Los Angels. http://deleeuwpdx.net/janspubs/2014/notes/deleeuw_U_14c.pdf.

Corresponding BibTeX entries:

  @Manual{,
    title = {cops: Cluster Optimized Proximity Scaling},
    author = {Thomas Rusch and Jan {de Leeuw} and Patrick Mair},
    year = {2019},
    note = {R package version 1.0-2},
  }

  @TechReport{,
    author = {Thomas Rusch and Patrick Mair and Kurt Hornik},
    title = {COPS: Cluster Optimized Proximity Scaling},
    address = {Vienna, Austria},
    institution = {WU Vienna University of Economics and Business},
    number = {2015/1},
    series = {Discussion Paper Series/Center for Empirical Research
      Methods},
    year = {2015},
    url = {http://epub.wu.ac.at/4476/},
  }

  @TechReport{,
    author = {Jan {de Leeuw}},
    title = {Minimizing rstress using nested majorization},
    address = {Los Angels},
    institution = {UCLA},
    series = {UCLA Statistics Preprint Series},
    year = {2014},
    url =
      {http://deleeuwpdx.net/janspubs/2014/notes/deleeuw_U_14c.pdf},
  }