| Reference Label | Details |
|---|---|
| Herzberg 1966 | G. Herzberg, "Molecular Spectra and Molecular Structure. III. Electronic Spectra and Electronic Structure of Polyatomic Molecules", Van Nostrand: New York 1966 |
| est unc | estimated uncertainty |
| Robinson 1958 | G. W. Robinson and V. E. DiGiorgio, Can. J. Chem. 36, 31-38 (1958) The Nature of Formaldehyde in Its Low-Lying Excited States |
| Raynes 1966 | W. T. Raynes, J. Chem. Phys. 44, 2755 (1966) Rotational Analysis of Some Bands of the Triplet-Singlet Transition in Formaldehyde |