Sarhan, B. M., E. J. Waheed, and B. Z. Naema. 2017. “Synthesis and Characterization of Some Mixed-Ligand Complexes Containing N-Acetyl Tryptophan and αPicoline With Some Metal Salts”. Ibn AL-Haitham Journal For Pure and Applied Sciences 24 (1). https://jih.uobaghdad.edu.iq/index.php/j/article/view/811.