AGNIHOTRI, R.; AGNIHOTRI, N.; KAMAL, Raj; R. MEHTA, Jaswant. 3-Hydroxy-2-(3´-methyl-2´-thienyl)-4-oxo-4H-1-benzopyran as an Analytical Reagent for the Spectrophotometric Determination of Tungsten(VI). Asian Journal of Chemistry, [S. l.], v. 20, n. 6, p. 4469–4476, 2010. Disponível em: https://asianpubs.org/index.php/ajchem/article/view/19046. Acesso em: 3 oct. 2024.