@misc{indiciae41bc53f2fe26, title = {USGS directions in MODFLOW development}, author = {P. M. Barlow and A.W. Harbaugh}, year = {2006}, doi = {10.1111/j.1745-6584.2006.00260.x}, url = {https://pubs.usgs.gov/publication/70028713}, note = {Source identifier: 70028713} }