@article {260,
	title = {Phenological changes reflect climate change in Wisconsin},
	journal = {Proceedings of the National Academy of Sciences of the United States of America},
	volume = {96},
	year = {1999},
	month = {08/1999},
	pages = {9701-9704},
	chapter = {9701},
	author = {Nina L. Bradley and A. Carl Leopold and John Ross and Wellington Huffaker}
}
