"Structure and stability of
Si_{45} clusters," Madhu Menon and K.R. Subbaswmy, Phys. Rev. B 51, 17952
(1995).
"Structure and Vibrational Frequencies of Fullerenes and
Tubules in a Non-orthogonal Tight-Binding Scheme," Madhu Menon, Ernst
Richter, and K.R. Subbaswamy, J. Chem. Phys., April 15, 1996 (in press)