Tendeloo, G. V., Amelinckx, S., Muto, S., Verheijen, M., van Loosdrecht, P., & Meijer, G. (1993). Structures and phase transitions in C60 and C70 fullerites. Ultramicroscopy, 51(1-4), 168-188. doi:10.1016/0304-3991(93)90145-N.