@article {698,
	title = {Nitrogen and drought effects on ectomycorrhizae of Norway spruce [Picea abries L. (Karst.)]. },
	journal = {Plant and Soil },
	volume = {198},
	year = {1998},
	pages = {179-184},
	author = {Nilsen, P. and Bxrja, I. and Knitsen, H. and Brean, R.}
}
