HUG, R.; HANSEN, H.-J.; SCHMID, H. Aromatische[1,7]-sigmatropische H-Verschiebungen in o-(Buta-1,3-dienyl)-phenolen. CHIMIA, [S. l.], v. 23, n. 3, p. 108, 1969. DOI: 10.2533/chimia.1969.108. Disponível em: https://www.chimia.ch/chimia/article/view/1969_108. Acesso em: 6 apr. 2025.