Unusual Expansion of the 1,2,4,5‐Tetrazine Ring in [1,2,4]Triazolo[4,3‐b][1,2,4,5]tetrazines Leading to [1,2,4,6]Tetrazepine Systems - Ganebnykh - 2011 - European Journal of Organic Chemistry - Wiley Online Library
Venus and Tannhäuser Part I : from 1852 to1885
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