@article {28798,
	title = {Faunal provinces in Canada as exemplified by mammals and birds : a mathematical consideration},
	volume = {50},
	year = {1972},
	pages = {1087-1104},
	publisher = {Canadian Journal of Zoology},
	author = {Kaiser, Gary W. and Lefkovitch, Leonard P. and Howden, Henry F.}
}
