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Farhadi, S.; Panahandehjoo, S. Decatungstodivanadogermanic Heteropoly Acid (H6GeW10V2O40.22H2O): A Novel, Green and Reusable Catalyst for Efficient Acetylation of Alcohols and Phenols under Solvent-Free Conditions. Eur. J. Chem. 2010, 1, 335-340.