@article {ARC22397,
	title = {Mycorrhizal fungi supply nitrogen to host plants in arctic tundra and boreal forests: 15N is the key signal},
	journal = {Canadian Journal of Microbiology},
	volume = {55},
	year = {2009},
	pages = {84-94},
	doi = {10.1139/W08-127},
	author = {John E. Hobbie and Erik A. Hobbie and J. C. Weber and J. Shamhart and H. Drossman and M. H. Conte}
}
