Reference Label	Details
est unc	estimated uncertainty
Lau 2006b	K. C. Lau and C. Y. Ng, Chin. J. Chem. Phys. 19, 29-38 (2006) Accurate ab initio Predictions of Ionization Energies and Heats of Formation for Cyclopropenylidene, Propargylene and Propadienylidene