Herzberg, G.; Teller, E. (1933). "Schwingungsstruktur der Elektronenübergänge bei mehratomigen Molekülen". Zeitschrift für Physikalische Chemie. 21B: 410–446. doi:10.1515/zpch-1933-2136. S2CID99159187.
Dressler, K.; Ramsay, D. A. (1959). "The electronic absorption spectra of NH2 and ND2". Philosophical Transactions of the Royal Society of London. Series A, Mathematical and Physical Sciences. 251 (1002): 553–602. Bibcode:1959RSPTA.251..553D. doi:10.1098/rsta.1959.0011. S2CID83464357.
Dressler, K.; Ramsay, D. A. (1959). "The electronic absorption spectra of NH2 and ND2". Philosophical Transactions of the Royal Society of London. Series A, Mathematical and Physical Sciences. 251 (1002): 553–602. Bibcode:1959RSPTA.251..553D. doi:10.1098/rsta.1959.0011. S2CID83464357.
Herzberg, G.; Teller, E. (1933). "Schwingungsstruktur der Elektronenübergänge bei mehratomigen Molekülen". Zeitschrift für Physikalische Chemie. 21B: 410–446. doi:10.1515/zpch-1933-2136. S2CID99159187.
Dressler, K.; Ramsay, D. A. (1959). "The electronic absorption spectra of NH2 and ND2". Philosophical Transactions of the Royal Society of London. Series A, Mathematical and Physical Sciences. 251 (1002): 553–602. Bibcode:1959RSPTA.251..553D. doi:10.1098/rsta.1959.0011. S2CID83464357.
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Molecular Symmetry and Spectroscopy, 2nd ed. Philip R. Bunker and Per Jensen, NRC Research Press, Ottawa (1998)[1]ISBN9780660196282