Catalogue of life, annual checklist 2004: indexing the world's known species

@inproceedings{Bisby2004CatalogueOL,
  title={Catalogue of life, annual checklist 2004: indexing the world's known species},
  author={Frank A. Bisby and Rainer Froese and A. G. Ruggiero and Karen L. Wilson},
  year={2004}
}