Used in the following papers:

Raman cross section for the pentagonal-pinch mode in Buckminsterfullerene
C_60, J. D. Lorentzen, S. Guha, J. Menéndez, P. Giannozzi, and S. Baroni
Chem. Phys. Lett. 270, 129 (1997)
 
Anomalous electronic behavior of Na_xC_60 (x<=10): Theory and Experiment,
W. Andreoni, P. Giannozzi, J. F. Armbruster, M. Knupfer and J. Fink
Europhys. Lett. 34, 699 (1996)

Isolation, Structure and Electronic Properties of the Heterofullerene 
Salt K_6C_59N, K. Prassides et al. Science 271, 1833 (1996)

Molecular Structure and Chemical Bonding in K_3C_60 and K_6C_60,
W. Andreoni, P. Giannozzi, and M. Parrinello, Phys. Rev. B 51, 2087 (1995)

Vibrational and Dielectric Properties of C_60 from Density-Functional 
Perturbation Theory, P. Giannozzi, S. Baroni, J. Chem. Phys. 100, 8537 (1994)

Absence of metal clusters and appearance of new electron states in Na_6C_60
W. Andreoni, P. Giannozzi, and M. Parrinello, Phys. Rev. Letters 72, 848 (1994)
 
Low-temperature structures of C_4 and C_10 from the Car-Parrinello method:
singlet states, W. Andreoni, D. Scharf, and P. Giannozzi, Chem. Phys. Lett. 
173, 449 (1990)