@article {11741,
	title = {Evolution and Measurement of Species Diversity},
	journal = {Taxon},
	volume = {21},
	year = {1972},
	month = {May},
	pages = {213-251},
	publisher = {International Association for Plant Taxonomy (IAPT)},
	keywords = {Biology, Ecosystem, Graphs and charts, Habitat models},
	author = {Whittaker, R. H}
}
