1. “Multiple orientational order parameters in solid C60”. Copley JRD, Michel KH, Physica: B : condensed matterT2 – International Conference on Neutron Scattering, AUG 17-21, 1997, TORONTO, CANADA 241, 454 (1997).   http://doi.org/10.1016/S0921-4526(97)00617-0