To cite pdc in publications use:

Brandmaier AM (2015). “pdc: An R Package for Complexity-Based Clustering of Time Series.” Journal of Statistical Software, 67(5), 1–23. doi:10.18637/jss.v067.i05.

Corresponding BibTeX entry:

  @Article{,
    title = {{pdc}: An {R} Package for Complexity-Based Clustering of
      Time Series},
    author = {Andreas M. Brandmaier},
    journal = {Journal of Statistical Software},
    year = {2015},
    volume = {67},
    number = {5},
    pages = {1--23},
    doi = {10.18637/jss.v067.i05},
  }