“Synthesis And Characterization Of Some New Acetylenic Mannich Bases Based On Biphenyl – 4,4 - Dithiol”. Baghdad Science Journal 10, no. 3 (September 1, 2013): 712–723. Accessed April 28, 2024. https://bsj.uobaghdad.edu.iq/index.php/BSJ/article/view/2584.