TY  - RPRT
TI  - Documentation of a computer program to simulate horizontal-flow barriers using the U.S. Geological Survey's modular three-dimensional finite-difference ground-water flow model
AU  - Paul A. Hsieh
AU  - John R. Freckleton
PY  - 1993
DO  - 10.3133/ofr92477
UR  - https://pubs.usgs.gov/publication/ofr92477
ID  - ofr92477
ER  -