Xiao, Tianpengfei, Zhang, Shu, Li, Baixiang, Hao, Xiang, Redshaw, Carl, Li, Yue Sheng, Sun, Wen Hua, "Ferrous and cobaltous chloride complexes bearing 2-(1-(arylimino)methyl)-8- (1H-benzimidazol-2-yl)quinolines: Synthesis, characterization and catalytic behavior in ethylene polymerization", Polymer, 2011