Collect. Czech. Chem. Commun.
1949, 14, 201-208
https://doi.org/10.1135/cccc19490201
On terpenes. IX. The spectra of 2,6-dimethylazulene and 4,6-dimethylazulene in the visible and ultraviolet region
F. Ĺ orm and O. Knessl
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