@article {31174,
	title = {Winter severity indices correlated to bison welfare. Section E. In : Wood Buffalo National Park bison research : 1977 annual report, J. G. Stelfox, compiler},
	year = {1977},
	institution = {Canadian Wildlife Service},
	address = {Edmonton, AB},
	author = {Stelfox, J. G. and Sturko, A.}
}
