To cite package 'qualV' in publications use:

Jachner, S., K. G. van den Boogaart and T. Petzoldt (2007). Statistical Methods for the Qualitative Assessment of Dynamic Models with Time Delay (R Package qualV). Journal of Statistical Software, 22(8), 1--30. URL http://www.jstatsoft.org/v22/i08/

Corresponding BibTeX entry:

  @Article{,
    title = {Statistical Methods for the Qualitative Assessment of
      Dynamic Models with Time Delay (R Package qualV)},
    author = {Stefanie Jachner and K.Gerald van den Boogaart and Thomas
      Petzoldt},
    journal = {Journal of Statistical Software},
    volume = {22},
    number = {8},
    pages = {1--30},
    year = {2007},
    coden = {JSSOBK},
    issn = {1548-7660},
    url = {http://www.jstatsoft.org/v22/i08},
    keywords = {ecological modeling, qualitative validation criteria,
      time shift, R.},
  }