1. L.F. Fieser, M. Fieser Advanced Organic Chemistry, Reinhold Publishing Corporation, New York, 1961, p. 376.
2. A theoretical study on CH2N2 isomers: structure and energetics
3. CRC Handbook of Chemistry and Physics,2009
4. Molecular Spectra and Molecular Structure IV. Constants of Diatomic Molecules;Huber,1979