@misc{indiciaeaa6fb0699a24, title = {Base of the upper layer of the phase-three Elkhorn-Loup groundwater-flow model, north-central Nebraska}, author = {Jennifer S. Stanton}, year = {2013}, doi = {10.3133/sim3259}, url = {https://pubs.usgs.gov/publication/sim3259}, note = {Source identifier: sim3259} }