Yousaf, M. et al. 2012. Synthesis and Characterization of Tridentate Schiff Base Derivative of Indenyl Lanthanoid Chloride Tetrahydrofuranate Complexes for Catalytic Applications. Asian Journal of Chemistry. 25, 1 (Aug. 2012), 518–520. DOI:https://doi.org/10.14233/ajchem.2013.13435.