I. Sárosi, L. Silaghi-Dumitrescu, and E. Hey-Hawkins, “Synthesis and coordination chemistry of thiophenol-based heterodonor ligands containing P,S, As,S and P,SAs donor atoms”, Maced. J. Chem. Chem. Eng., vol. 32, no. 1, pp. 1–23, Apr. 2013.