@article{DBLP:journals/nar/NataleABBBCDDEHNRSZW11,
  author    = {Darren A. Natale and
               Cecilia N. Arighi and
               Winona C. Barker and
               Judith A. Blake and
               Carol J. Bult and
               Michael Caudy and
               Harold J. Drabkin and
               Peter D'Eustachio and
               Alexei V. Evsikov and
               Hongzhan Huang and
               Jules Nchoutmboube and
               Natalia V. Roberts and
               Barry Smith and
               Jian Zhang and
               Cathy H. Wu},
  title     = {The Protein Ontology: a structured representation of protein
               forms and complexes},
  journal   = {Nucleic Acids Research},
  volume    = {39},
  number    = {Database-Issue},
  year      = {2011},
  pages     = {539-545},
  ee        = {http://dx.doi.org/10.1093/nar/gkq907},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}