Senses, E., S. Karabocek, N. Karabocek, and P. Ekmekcioglu. 2012. “Synthesis, Structural and Biochemical Activity Studies of Symmetrical and Unsymmetrical Pyrroles and Their Mononuclear Cu(II), Ni(II) and Co(II) Complexes”. Asian Journal of Chemistry 24 (9):3797-3801. https://asianpubs.org/index.php/ajchem/article/view/9471.