To cite hglm in publications use:

Lars Ronnegard, Xia Shen and Moudud Alam (2010) hglm: A Package for Fitting Hierarchical Generalized Linear Models. The R Journal, 2(2): 20-28. URL http://journal.r-project.org/archive/2010-2/RJournal_2010-2_Roennegaard~et~al.pdf.

Corresponding BibTeX entry:

  @Article{,
    title = {hglm: A Package for Fitting Hierarchical Generalized
      Linear Models},
    author = {Lars Ronnegard and Xia Shen and Moudud Alam},
    journal = {The R Journal},
    year = {2010},
    volume = {2},
    number = {2},
    pages = {20-28},
    url =
      {http://journal.r-project.org/archive/2010-2/RJournal_2010-2_Roennegaard~et~al.pdf},
  }