Synthesis And Characterization Of Some New Acetylenic Mannich Bases Based On Biphenyl – 4,4 - Dithiol. Baghdad Science Journal, Iraq, Baghdad, v. 10, n. 3, p. 712–723, 2025. DOI: 10.21123/bsj.2013.10.3.712-723. Disponível em: https://bsj-ojs.uobaghdad.edu.iq/index.php/BSJ/article/view/2584.. Acesso em: 19 jun. 2025.