Quang Hieu T, Ngoc Tuan N, Van Tan L. Spectroscopic Determination of Thorium Based on Azophenylcalix[4]arene. ajc [Internet]. 2010 Dec. 31 [cited 2024 Jul. 1];23(4):1716-8. Available from: https://asianpubs.org/index.php/ajchem/article/view/10166