To cite package 'boussinesq' in publications use

Cordano E (2013). boussinesq: Analytic Solutions for (ground-water) Boussinesq Equation. R package version 1.0.3, http://CRAN.R-project.org/package=boussinesq.

Cordano E and Rigon R (2013). “A mass-conservative method for the integration of the two-dimensional groundwater (Boussinesq) equation.” Water Resources Research, 49(2), pp. 1058–1078. ISSN 1944-7973, http://dx.doi.org/10.1002/wrcr.20072, http://dx.doi.org/10.1002/wrcr.20072.

For BibTex versions of citations use: toBibtex(citation('boussinesq'))

Corresponding BibTeX entries:

  @Manual{boussinesq_manual,
    title = {boussinesq: Analytic Solutions for (ground-water)
      Boussinesq Equation},
    author = {Emanuele Cordano},
    year = {2013},
    note = {R package version 1.0.3},
    url = {http://CRAN.R-project.org/package=boussinesq},
  }

  @Article{WRCR:WRCR20072,
    author = {E. Cordano and R. Rigon},
    title = {A mass-conservative method for the integration of the
      two-dimensional groundwater (Boussinesq) equation},
    journal = {Water Resources Research},
    volume = {49},
    number = {2},
    issn = {1944-7973},
    url = {http://dx.doi.org/10.1002/wrcr.20072},
    doi = {10.1002/wrcr.20072},
    pages = {1058--1078},
    keywords = {groundwater, Boussinesq equation, subsurface hydrology,
      hillslope hydrology, soil water subsurface flow, finite volume
      methods},
    year = {2013},
  }