@book{47579,
	author = {Fitch, Walter M., and ebrary, Inc.},
	title = {Tempo and mode in evolution},
	publisher = {National Academy Press,},
	year = {1995.},
	address = {Washington, D.C. :},
	note = {"National Academy of Sciences."},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10062977}
}