@article {35640,
	title = {Test of an erodability rating system for the foothills of central Alberta, Canada},
	volume = {IAHS-AISH Publ. No. 167},
	year = {1987},
	note = {Proceedings of the Vancouver Symposium, August 1987},
	url = {http://www.cig.ensmp.fr/~iahs/redbooks/a167/167015.pdf},
	author = {Llerena, C. A. and Zhang, H. and Rothwell, R. L.}
}
