To cite VPdtw in publications use:

David Clifford, Glenn Stone (2012). Variable Penalty Dynamic Time Warping Code for Aligning Mass Spectrometry Chromatograms in R. Journal of Statistical Software, 47(8), 1-17. URL http://www.jstatsoft.org/v47/i08/.

David Clifford, Glenn Stone, Ivan Montoliu, Serge Rezzi, Francois-Pierre Martin, Philippe Guy, Stephen Bruce, Sunil Kochhar (2009). Alignment Using Variable Penalty Dynamic Time Warping, 81(3), 1000-1007.

Corresponding BibTeX entries:

  @Article{,
    title = {Variable Penalty Dynamic Time Warping Code for Aligning
      Mass Spectrometry Chromatograms in {R}},
    author = {David Clifford and Glenn Stone},
    journal = {Journal of Statistical Software},
    year = {2012},
    volume = {47},
    number = {8},
    pages = {1--17},
    url = {http://www.jstatsoft.org/v47/i08/},
  }
  @Article{,
    title = {Alignment Using Variable Penalty Dynamic Time Warping},
    author = {David Clifford and Glenn Stone and Ivan Montoliu and
      Serge Rezzi and Francois-Pierre Martin and Philippe Guy and
      Stephen Bruce and Sunil Kochhar},
    journal = {Analytical Chemistry},
    year = {2009},
    volume = {81},
    number = {3},
    pages = {1000--1007},
  }