Capitán, F. y Román, M. (1967) «Analytical applications of anthragalol and anthrapurpurine. III.- Spectrophotometric determination of Th (IV) with anthrapurpurine», Ars Pharmaceutica (Internet), 8(7-10), pp. 399–404. Disponible en: https://revistaseug.ugr.es/index.php/ars/article/view/7681 (Accedido: 2 mayo 2024).