@article{Hulswit2010,
  author    = {Menno Hulswit},
  title     = {Peirce's teleological approach to natural classes},
  journal   = {Transactions of the Charles S. Peirce Society},
  volume    = {33},
  number    = {3},
  pages     = {722 -- 772},
  year      = {2010},
}