Reference Label	Details
Ruscic CBS-n	CBS-Q, CBS-QB3, CBS-APNO calculations
Petrie 1998	S. Petrie, J. Phys. chem. A 102, 7835-7840 (1998) Proton Affinities of Dicyanogen Isomers: Is There a Preferred Site of Protonation for CNCN?