Sarhan, B. M., E. J. Waheed, & B. Z. Naema.
" Synthesis and Characterization of Some Mixed-Ligand Complexes Containing N-Acetyl Tryptophan and αPicoline with Some Metal Salts." <em>Ibn AL- Haitham Journal For Pure and Applied Science</em> [Online], 24.1 (2011): n. pag. Web.  1 Dec. 2019