To cite clustEff (clusters of effects curves) in publications use:

Sottile G, Adelfio G (2019). “Clusters of effects curves in quantile regression models.” Computational Statistics, 34, 551–569. doi:10.1007/s00180-018-0817-8.

To cite the FPCAC algorithm (fpcac) in publications use:

Adelfio G, Chiodi M, D'Alessandro A, Luzio D (2011). “FPCA algorithm for waveform clustering.” Journal of Communication and Computer, 8, 494–502.

Corresponding BibTeX entries:

  @Article{,
    title = {Clusters of effects curves in quantile regression models},
    author = {Gianluca Sottile and Giada Adelfio},
    journal = {Computational Statistics},
    year = {2019},
    volume = {34},
    pages = {551--569},
    doi = {10.1007/s00180-018-0817-8},
  }

  @Article{,
    title = {FPCA algorithm for waveform clustering},
    author = {Giada Adelfio and Marcello Chiodi and Antonino
      D'Alessandro and Dario Luzio},
    journal = {Journal of Communication and Computer},
    year = {2011},
    volume = {8},
    pages = {494--502},
  }