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Wang, X.B.; Vorpagel, E.R.; Yang, X.; Wang, L.S., Experimental and theoretical investigations of the stability, energetics, and structures, of H2PO4-, H2P2O72-, and H3P3O102- in the gas phase, J. Phys. Chem. A, 2001, 105, 45, 10468-10474, https://doi.org/10.1021/jp013244u . [all data]