To cite HIBAG in publications use:

Zheng X, Shen J, Cox C, Wakefield J, Ehm M, Nelson M, Weir BS. HIBAG -- HLA Genotype Imputation with Attribute Bagging. The Pharmacogenomics Journal. doi:10.1038/tpj.2013.18. http://dx.doi.org/10.1038/tpj.2013.18

Corresponding BibTeX entry:

  @Article{,
    title = {HIBAG -- HLA Genotype Imputation with Attribute Bagging},
    author = {Xiuwen Zheng and Judong Shen and Charles Cox and Jonathan
      C. Wakefield and Margaret G. Ehm and Matthew R. Nelson and Bruce
      S. Weir},
    journal = {The Pharmacogenomics Journal},
    year = {2013},
    doi = {10.1038/tpj.2013.18.},
    url = {http://dx.doi.org/10.1038/tpj.2013.18},
  }