Pure Appl. Chem., 1979, Vol. 51, No. 2, pp. 393-404
doi:10.1351/pac197951020393
PHYSICAL AND BIOPHYSICAL CHEMISTRY DIVISION
COMMISSION ON THERMODYNAMICS
Manual of symbols and terminology for physicochemical quantities and units. Appendix IV: Notation for states and processes, significance of the word standard in chemical thermodynamics, and remarks on functions used in thermodynamics tables