To cite MetaboSignal:

  Rodriguez-Martinez A, Ayala R, Posma JM, Neves AL, Gauguier D,
  Nicholson JK, Dumas ME. 2016. MetaboSignal: a network-based approach
  for topological analysis of metabotype regulation via metabolic and
  signaling pathways. Bioinformatics

A BibTeX entry for LaTeX users is

  @Article{,
    author = {Andrea Rodriguez-Martinez and Rafael Ayala and Joram M Posma and Ana L Neves and Dominique Gauguier and Jeremy K Nicholson and Marc-Emmanuel Dumas},
    title = {MetaboSignal: a network-based approach for topological analysis of metabotype regulation via metabolic and signaling pathways},
    journal = {Bioinformatics},
    year = {2016},
    doi = {10.1093/bioinformatics/btw697},
  }