Reference Label	Details
Everett 1954	D. H. Everett and D. A. Landsman, Trans. Faraday Soc. 50, 1221-1229 (1954) A Redetermination of the Dissociation Constant of the Ammonium Ion and the Base Strength of Ammonia in Water
as quoted by CODATA Key Vals	as quoted by CODATA Key Vals
Olofsson 1975a	G. Olofsson, J. Chem. Thermodyn. 7, 507-514 (1975) Thermodynamic Quantities for the Dissociation of the Ammonium Ion and for the Ionization of Aqueous Ammonia over a Wide Temperature Range