TY - RPRT TI - SUTRA: A model for 2D or 3D saturated-unsaturated, variable-density ground-water flow with solute or energy transport AU - Clifford I. Voss AU - A.M. Provost PY - 2002 DO - 10.3133/wri024231 UR - https://pubs.usgs.gov/publication/wri024231 ID - wri024231 ER -