@article {Koptsik2003JOEM,
	title = {{Heavy metals in soils near the nickel smelter: Chemistry, spatial variation, and impacts on plant diversity}},
	journal = {Journal of Environmental Monitoring},
	volume = {5},
	number = {3},
	year = {2003},
	pages = {441-50},
	author = {Koptsik, S. and Koptsik, G. and Livantsova, S. and Eruslankina, L. and Zhmelkova, T. and Vologdina, Z.}
}