Negatively curved graphitic sheet model of amorphous carbon

Authors: 

S. J. Townsend, T. J. Lenosky, D. A. Muller, C. S. Nichols, and V. Elser

Phys. Rev. Lett. 69, 921-924 (1992)

https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.69.921