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Zur Kenntnis der flüchtigen Pflanzenstoffe VIII. Synthese des Vetivazulens Alexander St. Pfau, Pl. A. Plattner Helvetica Chimica Acta Volume 22 Issue 1, Pages 202–08 1939 DOI:10.1002/hlca.19390220126
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Approach to the Blues: A Highly Flexible Route to the Azulenes Sébastien Carret, Aurélien Blanc, Yoann Coquerel, Mikaël Berthod, Andrew E. Greene, Jean-Pierre Deprés Angewandte Chemie International Edition Volume 44, Issue 32, Pages 5130–33 2005Abstract10 Ocak 2020 tarihinde Wayback Machine sitesinde arşivlendi.
Approach to the Blues: A Highly Flexible Route to the Azulenes Sébastien Carret, Aurélien Blanc, Yoann Coquerel, Mikaël Berthod, Andrew E. Greene, Jean-Pierre Deprés Angewandte Chemie International Edition Volume 44, Issue 32, Pages 5130–33 2005Abstract10 Ocak 2020 tarihinde Wayback Machine sitesinde arşivlendi.