To cite clustEff or fpcac 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.

Luzio D, Chiodi M, Adelfio G, D'Alessandro A (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 = {Dario Luzio and Marcello Chiodi and Giada Adelfio and
      Antonino D'Alessandro},
    journal = {Journal of Communication and Computer},
    year = {2011},
    volume = {8},
    pages = {494-502},
  }