To cite psda in publications, please use:

W. Silva. Polygonal data analysis: A new framework in symbolic data analysis, 2019 https://www.sciencedirect.com/science/article/pii/S0950705118304052

Corresponding BibTeX entry:

  @Manual{,
    author = {{Wagner J. F. Silva} and {Renata M. C. R. Souza} and
      {Francisco J. A. Cysneiros}},
    title = {Symbolic Polygonal Data Analysis},
    year = {2019},
    note = {R package version 1.3.1},
    url =
      {https://www.sciencedirect.com/science/article/pii/S0950705118304052},
  }