Reference Label	Details
Gray 1930	L. T. M. Gray and D. W. G. Style, Proc. Roy. Soc. (London) A 126, 603-612 (1930) The Absorption of Light by Chlorine, Bromine and their Gaseous Mixtures
Vesper 1934	H. G. Vesper and G. K. Rollefson, J. Am. Chem. Soc. 56, 620-625 (1934) The Equilibrium in the Reaction Cl2 + Br2 = 2BrCl
3rd Law	Third law analysis
est unc	estimated uncertainty