@misc{indiciaefe842c6a6f20, title = {Monitoring urban land cover change by updating the national land cover database impervious surface products}, author = {George Z. Xian and Collin G. Homer}, year = {2009}, doi = {10.1109/urs.2009.5137597}, url = {https://pubs.usgs.gov/publication/70037212}, note = {Source identifier: 70037212} }