@article {44853,
	title = {Relating aspen defoliation to changes in leaf area derived from field and satellite remote sensing data},
	volume = {29},
	year = {2003},
	pages = {299-313},
	publisher = {Canadian Journal of Remote Sensing},
	author = {Hall, R. J. and Fernandes, R. A. and Hogg, E. H. and Brandt, J. P. and Butson, C. and Case, B. S. and Leblanc, S.G.}
}
