To cite package 'EQL' in publications use:

Thorn Thaler (2009). Die Extended-Quasi-Likelihood-Funktion in Generalisierten Linearen Modellen. Master's thesis, Technische Universit├Ąt Graz.

Corresponding BibTeX entry:

  @MastersThesis{,
    title = {Die Extended-Quasi-Likelihood-Funktion in Generalisierten
      Linearen Modellen},
    author = {{Thorn Thaler}},
    year = {2009},
    school = {Technische Universit\"{a}t Graz},
  }