To cite the 'Rssa' package in publications use:

Anton Korobeynikov (2010) Computation- and space-efficient implementation of SSA. Statistics and Its Interface, Vol. 3, No. 3, 257-368

Nina Golyandina and Anton Korobeynikov (2014) Basic Singular Spectrum Analysis and Forecasting with R. Computational Statistics and Data Analysis, Vol. 71, 934-954

Nina Golyandina, Anton Korobeynikov, Alex Shlemov, Konstantin Usevich (2015). Multivariate and 2D Extensions of Singular Spectrum Analysis with the Rssa Package. Journal of Statistical Software, 67(2), 1-78.<doi:10.18637/jss.v067.i02>.

Corresponding BibTeX entries:

  @Article{,
    title = {Computation- and space-efficient implementation of SSA},
    author = {Anton Korobeynikov},
    journal = {Statistics and Its Interface},
    volume = {3},
    number = {3},
    year = {2010},
    pages = {357--368},
    note = {R package version 0.14},
  }

  @Article{,
    title = {Basic Singular Spectrum Analysis and Forecasting with R},
    author = {Nina Golyandina and Anton Korobeynikov},
    journal = {Computational Statistics and Data Analysis},
    volume = {71},
    year = {2014},
    pages = {934--954},
    note = {R package version 0.14},
  }

  @Article{,
    title = {Multivariate and 2D Extensions of Singular Spectrum
      Analysis with the {Rssa} Package},
    author = {Nina Golyandina and Anton Korobeynikov and Alex Shlemov
      and Konstantin Usevich},
    journal = {Journal of Statistical Software},
    year = {2015},
    volume = {67},
    number = {2},
    pages = {1--78},
    doi = {10.18637/jss.v067.i02},
  }