Estimation of species extinction: what are the consequences when total species number is unknown?

Youhua Chen. Estimation of species extinction: what are the consequences when total species number is unknown?. Theory in Biosciences, 133(3-4):175-178, 2014. [doi]

@article{Chen14-90,
  title = {Estimation of species extinction: what are the consequences when total species number is unknown?},
  author = {Youhua Chen},
  year = {2014},
  doi = {10.1007/s12064-014-0202-2},
  url = {http://dx.doi.org/10.1007/s12064-014-0202-2},
  researchr = {https://researchr.org/publication/Chen14-90},
  cites = {0},
  citedby = {0},
  journal = {Theory in Biosciences},
  volume = {133},
  number = {3-4},
  pages = {175-178},
}