@article {2677,
	title = {Improving overland flow routing by incorporating ancillary road data into Digital Elevation Models},
	journal = {Journal of Spatial Hydrology 3: 23-49 },
	year = {2003},
	author = {Duke, G.D. and Kienzle, S.W. and Johnson, D.L. and Byrne, J.M.}
}