@article {mays2001comparison,
	title = {Comparison of heavy metal accumulation in a natural wetland and constructed wetlands receiving acid mine drainage},
	journal = {Ecological engineering},
	volume = {16},
	number = {4},
	year = {2001},
	pages = {487{\textendash}500},
	publisher = {Elsevier},
	author = {Mays, PA and Edwards, GS}
}
