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Aureggi, Valentina; Sedelmeier, Gottfried (2007). "1,3-Dipolar Cycloaddition: Click Chemistry for the Synthesis of 5-Substituted Tetrazoles from Organoaluminum Azides and Nitriles". Angewandte Chemie. 119 (44): 8592. Bibcode:2007AngCh.119.8592A. doi:10.1002/ange.200701045.