V. V. Kveder, R. K. Nikolaev, E. A. Steinman, and Yu. A. Ossipyan, Electronic properties of C₆₀ crystals: why we need crystals grown in a microgravity?, Low Temp. Phys. 24, (1998) [Fiz. Nizk. Temp. 24, 180-180, (1998)] DOI: https://doi.org/10.1063/1.593558.