To cite the CompQuadForm package in publications use:

Duchesne, P. and Lafaye De Micheaux, P. (2010) Computing the distribution of quadratic forms: Further comparisons between the Liu-Tang-Zhang approximation and exact methods Computational Statistics and Data Analysis vol. 54, p.858-862

Corresponding BibTeX entry:

  @Article{,
    title = {Computing the distribution of quadratic forms: Further
      comparisons between the Liu-Tang-Zhang approximation and exact
      methods},
    author = {P. Duchesne and P. Lafaye {de Micheaux}},
    journal = {Computational Statistics and Data Analysis},
    year = {2010},
    pages = {858-862},
    volume = {54},
  }