To cite 'TargetSearch' in publications use:

  Cuadros-Inostroza A, Caldana C, Redestig H, Lisec L, Pena-Cortes H,
  Willmitzer L, and Hannah MA. TargetSearch - a Bioconductor package
  for the efficient pre-processing of GC-MS metabolite profiling data.
  BMC Bioinformatics 2009, 10:428.

A BibTeX entry for LaTeX users is

  @Article{,
    title = {TargetSearch - a Bioconductor package for the efficient pre-processing of GC-MS metabolite profiling data},
    author = {Alvaro Cuadros-Inostroza and Camila Caldana and Henning Redestig and Jan Lisec and Hugo Pena-Cortes and Lothar Willmitzer and Matthew A Hannah},
    journal = {BMC Bioinformatics},
    year = {2009},
    volume = {10},
    pages = {428},
    doi = {10.1186/1471-2105-10-428},
  }