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Vanderhoff, J.A.; Heimerl, J.M., The Equilibrium Constant for NO+(NO) ---> NO+(SO2) and the Rate Coefficient of SO2 Clustering to NO+, at 296 K, J. Chem. Phys., 1977, 66, 8, 3838, https://doi.org/10.1063/1.434380 . [all data]