TY - RPRT TI - MODFLOW-2000, the U.S. Geological Survey Modular Ground-Water Model--Documentation of the SEAWAT-2000 Version with the Variable-Density Flow Process (VDF) and the Integrated MT3DMS Transport Process (IMT) AU - Christian D. Langevin AU - W. Barclay Shoemaker AU - Weixing Guo PY - 2003 DO - 10.3133/ofr03426 UR - https://pubs.usgs.gov/publication/ofr03426 ID - ofr03426 ER -