K. Binnemans, C. Görller-Walrand, Chem, Phys, Lett. 1995, 235, 163-174.
Orlando C. Stewart, Jr., Alexander C. Marwitz, Joel Swanson, Jeffery A. Bertke, Tyler Hartman, Jorge H. S. K. Monteiro, Ana de Bettencourt-Dias, Karah E. Knope, and Sarah L. Stoll, Inorg. Chem. 2022, 61, 39, 15547-15557.