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Control of Pyramidal Inversion Rates by Redox Switching Mark W. Davies, Michael Shipman, James H. R. Tucker, and Tiffany R. Walsh J. Am. Chem. Soc.; 2006; 128(44) pp. 14260–14261; (Communication) doi10.1021/ja065325f
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Cleeton, C.E.; Williams, N.H. (1934). “Electromagnetic waves of 1.1 cm wave-length and the absorption spectrum of ammonia”. 《Physical Review》 45 (4): 234–237. Bibcode:1934PhRv...45..234C. doi:10.1103/PhysRev.45.234.