@article{Rosch-etal76,
  author	= {Rosch, E. and Mervis, C. B. and Gray, W. D. and Johnson, D. M. and Boyes-Braem, P.},
  year		= {1976},
  title		= {Basic objects in natural categories},
  journal	= {Cognitive Psychology},
  volume	= {8},
  pages		= {382--439}
}