D. M. Roitershtein, A. M. Ellern, M. Yu. Antipin, L. F. Rybakova, Yu. T. Struchkov, E. S. Petrov, “The First Structurally Characterized Organolanthanoid Compound with an Anthracene Dianion Ligand. Synthesis and Structure (at 143 K) of η<sup>5</sup>-(C<sub>5</sub>H<sub>5</sub>)LU(C<sub>14</sub>H<sub>10</sub> <sup>2−</sup>) 2thf (thf = tetrahydrofuran)”, Mendeleev Commun., 2:3 (1992), 118–120
