To cite PTAk in publications use preferably the JSS one and the current version:

Package: PTAk

Version: 1.2-0

Date: 2009-10-3

Title: Principal Tensor Analysis on k modes

Author: Didier Leibovici     <didier.leibovici@nottingham.ac.uk>

Maintainer: Didier Leibovici <c3s2i@free.fr>

Depends:  tensor, tensorA

Description: A multiway method to decompose a tensor (array) of any order, as a generalisation of SVD also supporting non-identity metrics and penalisations. 2-way SVD with these extensions is also available. The package includes also some other multiway methods: PCAn (Tucker-n) and PARAFAC/CANDECOMP with these extensions.

License: GPL(>=2)

URL: http://c3s2i.free.fr/

  Leibovici, D. and Sabatier, R.(1998)A Singular Value Decomposition of k-Way Array for a Principal Component Analysis of Multiway Data,

  PTA-k. Linear Algebra and its Applications, 269:307-329

A BibTeX entry for LaTeX users is

  @Article{,

    title = {\textup{A Singular Value Decomposition of  \textit{k}-Way Array for

       a Principal Component Analysis of Multiway Data, \textsc{PTA}-\textit{k}}},

    author = {D. Leibovici and R. Sabatier},

    journal = {Linear Algebra and Its Applications},

    year = {1998},

    volume = {269},

    pages = {307-329},

  }

  Leibovici D.G. (2009) PTAk: Principal Tensor Analysis on k modes, R package version 1.2-0 .

  http://cran.r-project.org/web/packages/PTAk/index.html.

A BibTeX entry for LaTeX users is

  @Manual{,

    title = {\textup{PTAk}: \textup{Principal Tensor Analysis on k modes}},

    author = {Leibovici D.G.},

    year = {2009},

    edition = {R package version 1.1-20},

    url = {http://cran.r-project.org/web/packages/PTAk/index.html},

  }

  Leibovici D.G. (accepted in 2009) Spatio-Temporal Multiway Decompositions using Principal Tensor Analysis on k-modes: the R-package

  PTAk. Journal of Statistical Software. xx(x): 1-34.

A BibTeX entry for LaTeX users is

  @Article{,

    title = {\textup{Spatio-Temporal Multiway Decompositions using Principal Tensor Analysis on k-modes: the  \textsc{R}-package \textsc{PTAk}}},

    author = {Leibovici D.G.},

    journal = {Journal of Statistical Software},

    year = {accepted in 2009},

    volume = {xx},

    pages = {1-34},

    number = {x},

  }

visit also http://c3s2i.free.fr or http://cgs.nottingham.ac.uk/~lgzdl