@article{DBLP:journals/nar/KlimkeABCCFKORRSTT09,
  author    = {William Klimke and
               Richa Agarwala and
               Azat Badretdin and
               Slava Chetvernin and
               Stacy Ciufo and
               Boris Fedorov and
               Boris Kiryutin and
               Kathleen O'Neill and
               Wolfgang Resch and
               Sergei Resenchuk and
               Susan Schafer and
               Igor Tolstoy and
               Tatiana A. Tatusova},
  title     = {The National Center for Biotechnology Information's Protein
               Clusters Database},
  journal   = {Nucleic Acids Research},
  volume    = {37},
  number    = {Database-Issue},
  year      = {2009},
  pages     = {216-223},
  ee        = {http://dx.doi.org/10.1093/nar/gkn734},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}