S. Hu, T. Liu, W. Shen, Z. Slanina, T. Akasaka, Y. Xie, F. Uhlik, W. Huang, and X. Lu. Isolation and Structural Characterization of Er@C2v(9)-C82 and Er@Cs(6)-C82: Regioselective Dimerization of a Pristine Endohedral Metallofullerene Induced by Cage Symmetry. Inorganic Chemistry, American Chemical Society (ACS), volume 58, issue 3, January 2019. S. Hu, T. Liu, W. Shen, Z. Slanina, T. Akasaka, Y. Xie, F. Uhlik, W. Huang, and X. Lu. Isolation and Structural Characterization of Er@C2v(9)-C82 and Er@Cs(6)-C82: Regioselective Dimerization of a Pristine Endohedral Metallofullerene Induced by Cage Symmetry. Inorganic Chemistry, American Chemical Society (ACS), volume 58, issue 3, January 2019.