Reference Label	Details
Vogt 1978	J. Vogt, A. D. Williamson, and J. L. Beauchamp, J. Am. Chem. Soc. 100, 3478-3483 (1978) Properties and Reactions of Ketene in the Gas Phase by Ion Cyclotron Resonance Spectroscopy and Photoionization Mass Spectrometry. Proton Affinity, Site Specificity of Protonation, and Heat of Formation of Ketene