To cite package 'NetIndices' in publications use:

  Kones, J.K., Soetaert, K., van Oevelen, D. and J.Owino (2009).  Are
  network indices robust indicators of food web functioning? a Monte
  Carlo approach.  Ecological Modelling, 220, 370-382.

A BibTeX entry for LaTeX users is

  @Article{,
    title = {Are network indices robust indicators of food web functioning? a Monte Carlo approach.},
    author = {Julius Kipyegon Kones and Karline Soetaert and Dick {van Oevelen} and John Owino},
    journal = {Ecological Modelling},
    volume = {220},
    pages = {370-382},
    year = {2009},
    keywords = {Food web, Inverse models, Network indices, Minimum norm solution,
              Monte Carlo average solution.},
  }