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DeSain, J.D.; Thompson, R.I.; Sharma, S.D.; Curl, R.F., The rotationally resolved infrared spectrum of the «nu»[sub 1] stretch of the allyl radical, J. Chem. Phys., 1998, 109, 18, 7803, https://doi.org/10.1063/1.477426 . [all data]