1. Allison , J. D. D. S. Brown K. J. Novo-Gradac MINTEQA2/ PRODEFA2, a geochemical assessment model for environmental systems: Version 3.0 user's manual Boulder, Colo. 1991
2. Ball , J. W. D. K. Nordstrom User's manual for WATEQ4F, with revised thermodynamic database and test cases for calculating speciation of major, trace and redox elements in natural waters 1991
3. Bennett , T. A. An in-situ reactive barrier for the treatment of hexavalent chromium and trichloroethylene in groundwater Waterloo, Ont., Canada 1997
4. Blowes , D. W. K. U. Mayer An in-situ permeable reactive barrier for the treatment of hexavalent chromium and trichloroethylene in groundwater 3 Reactive transport modelling U.S. Environ. Prot. Agency Washington, D.C. 1999