Moshtaghi Zenouz, A. “Synthesis of Tricarbonylchromium Complex of 1,2;5,6;9,10-Tribenzododeca-1,5,9-Triene”. Asian Journal of Chemistry, vol. 17, no. 2, Jan. 2016, pp. 1304-6, https://asianpubs.org/index.php/ajchem/article/view/14344.