La(III) and Ce(IV)Complexes of Novel Azo-Theophylline Ligand :Structural Analysis and Biological Effectiveness. Iraqi Journal of Science, [S. l.], v. 66, n. 1, p. 39–51, 2025. DOI: 10.24996/ijs.2025.66.1.4. Disponível em: https://www.ijs.uobaghdad.edu.iq/index.php/eijs/article/view/10813.. Acesso em: 6 aug. 2025.