1) Norrby, T.; Boerje, A.; Aakermark, B.; Hammarstroem, L.; Alsins, J.; Lashgari, K.; Norrestam, R.; Maartensson, J.; Stenhagen, G.; Inorg. Chem. 1997, 36(25), 5850-5858, DOI:10.1021/IC9705812 ; Synthesis, Structure, and Photophysical Properties of Novel Ruthenium(II) Carboxypyridine Type Complexes 

2) Tse, M.; Jiao, H.; Anilkumar, G.; Bitterlich, B.; Gelalcha, F.; Beller, M.; J. Organometallic Chem. 2006, 691(21), 4419-4433, DOI:10.1016/j.jorganchem.2005.12.069 ; Synthetic, spectral and catalytic activity studies of ruthenium bipyridine and terpyridine complexes: Implications in the mechanism of the ruthenium(pyridine-2,6-bisoxazoline)(pyridine-2,6-dicarboxylate)-catalyzed asymmetric epoxidation of olefins utilizing H2O2

3) Tong, L.; Inge, A.; Duan, L.; Wang, L.; Zou, X.; Sun, L.; Inorg. Chem. 2013, 52(5), 2505-2518, DOI:10.1021/ic302446h ; Catalytic Water Oxidation by Mononuclear Ru Complexes with an Anionic Ancillary Ligand