@article {7537,
	title = {Effects of competition on rates of evolution, with special reference to bivalve mollusks and mammals},
	journal = {Systematic Zoology},
	volume = {22},
	number = {4},
	year = {1973},
	note = {PDF},
	pages = {486-506},
	keywords = {bivalvia, competition, diversification, evolution, rates},
	author = {Stanley, Steven M.}
}
@article {7328,
	title = {Analysis of rates of morphologic evolution},
	journal = {Annual Review of Ecology, Evolution, and Systematics},
	volume = {34},
	year = {2003},
	note = {PDF},
	pages = {605-632},
	keywords = {evolution, macroevolution, morphological characters, random walk, rates},
	author = {Roopnarine, Peter D.}
}
