Hönle, Wolfgang (1991). "Crystal structure of H2S2O7 at 298 K". Zeitschrift für Kristallographie - Crystalline Materials. 196 (1–4). doi:10.1524/zkri.1991.196.14.279. S2CID101311329.
Perrin, D. D., ed. (1982) [1969]. Ionisation Constants of Inorganic Acids and Bases in Aqueous Solution. IUPAC Chemical Data (2nd ed.). Oxford: Pergamon (published 1984). Entry 62. ISBN0-08-029214-3. LCCN82-16524.
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Hönle, Wolfgang (1991). "Crystal structure of H2S2O7 at 298 K". Zeitschrift für Kristallographie - Crystalline Materials. 196 (1–4). doi:10.1524/zkri.1991.196.14.279. S2CID101311329.