| 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 |
| Olofsson 1975a | G. Olofsson, J. Chem. Thermodyn. 7, 507 (1975) |