RT Journal Article SR Electronic T1 Theoretical prediction of the thermodynamic behavior of aqueous electrolytes by high pressures and temperatures; IV, Calculation of activity coefficients, osmotic coefficients, and apparent molal and standard and relative partial molal properties to 600 degrees C and 5kb JF American Journal of Science JO Am J Sci FD American Journal of Science SP 1249 OP 1516 DO 10.2475/ajs.281.10.1249 VO 281 IS 10 A1 Helgeson, Harold C. A1 Kirkham, David H. A1 Flowers, George C. YR 1981 UL http://www.ajsonline.org/content/281/10/1249.abstract AB