To cite the nlreg package in publications use:

Brazzale, A.R. (2005). hoa: An R package bundle for higher order likelihood inference. Rnews, 5/1 May 2005, 20-27. ISSN 609-3631, URL ftp://cran.r-project.org/doc/Rnews/Rnews_2005-1.pdf.

Examples of applications, and generally of the use of likelihood asymptotics, are given in Brazzale, A.R., Davison, A.C. and Reid, N. (2007). Applied Asymptotics: Case Studies in Small-Sample Statistics. Cambridge University Press, Cambridge. URL http://statwww.epfl.ch/AA/

Corresponding BibTeX entry:

  @Article{,
    title = {{hoa}: {An} {R} package bundle for higher order likelihood
      inference},
    author = {Alessandra R. Brazzale},
    journal = {Rnews},
    volume = {5/1 {May} 2005},
    year = {2005},
    pages = {20--27},
    note = {{ISSN} 609-3631},
    url = {ftp://cran.r-project.org/doc/Rnews/Rnews_2005-1.pdf},
  }