@article {697,
	title = {Topographic and soil influences on root productivity of three bioenergy cropping systems},
	journal = {New Phytologist},
	volume = {199},
	year = {2013},
	pages = {727-737},
	isbn = {1469-8137},
	author = {Ontl, Todd A and Hofmockel, Kirsten S. and Cambardella, Cynthia A and Schulte, Lisa A and Kolka, Randall K}
}
