@article{DT077,
   Author = {Li, Y. S. and Tomanek, D.},
   Title = {How free are encapsulated atoms in C$_{60}$?},
   Journal = {Chem. Phys. Lett.},
   Volume = {221},
   Number = {5-6},
   Pages = {453--458},
   Year = {1994},
   url = {http://dx.doi.org/10.1016/0009-2614(94)00297-5},
   doi = {10.1016/0009-2614(94)00297-5}
}