@article{Chen:74804,
      author        = "Chen, W.P. and Singleton, J. and Qin, L. and Camón, A.
                       and Engelhardt, L. and Luis, F. and Winpenny, R.E.P. and
                       Zheng, Y.Z.",
      title         = "{Quantum Monte Carlo simulations of a giant {Ni21Gd20}
                       cage with a S = 91 spin ground state}",
      year          = "2018",
}