@misc{indiciae1ee11682bd38,
  title = {MODFLOW–USG version 1: An unstructured grid version of MODFLOW for simulating groundwater flow and tightly coupled processes using a control volume finite-difference formulation},
  author = {Sorab Panday and Christian D. Langevin and Richard G. Niswonger and Motomu Ibaraki and Joseph D. Hughes},
  year = {2013},
  doi = {10.3133/tm6a45},
  url = {https://pubs.usgs.gov/publication/tm6A45},
  note = {Source identifier: tm6A45}
}