@article {26280,
	title = {The nature of cycles in populations of Canadian mammals},
	volume = {31},
	year = {1953},
	pages = {242-262},
	publisher = {Canadian Journal of Zoology},
	url = {http://article.pubs.nrc-cnrc.gc.ca/RPAS/RPViewDoc?_handler_=HandleInitialGet\&calyLang=eng\&journal=cjz\&volume=35\&articleFile=z57-010.pdf},
	author = {Butler, L.}
}
