1. Sillén, L.G., Martell, A.E.: Stability Constants of Metal Ion Complexes. Special Publication 17. The Chemical Society, London (1964)
2. Sillén, L.G., Martell, A.E.: Stability Constants of Metal Ion Complexes. Suppl. 1, Special Publication 25. The Chemical Society, London (1975)
3. Smith, R.M., Martell, A.E.: Critical Stability Constants, vols. 1–6. Plenum, New York (1974–1989)
4. Martell, A.E., Smith, R.M., Motekaitis, R.J.: NIST Critically Selected Stability Constants of Metal Complexes. Database Version 4. NIST, Gaithersburg (1997)
5. Pettit, L.D., Powell, K.: IUPAC Stability Constants Database. Academic Software, Otley (1997)