1. Wagman DD, Evans WH, Parker VB, Schumm RH, Halow I, Bailey SM, Churney KL, Nuttall RL (1982) The NBS tables of chemical thermodynamic properties: selected values for inorganic and C1 and C2 organic substances in SI units. J Phys Chem Ref Data 11 (Supplement 2)
2. TRC data series;JB Pedley,1994
3. For 2000: Liebman JF (2003) Struct Chem 14:299
4. For 2001: Liebman JF (2003) Struct Chem 14:403
5. For 2002: Stem-Beren MR, Liebman JF (2005) Struct Chem 16:159