1. A. M. Rao and P. C. Eklund, Department of Physics and Astronomy and Center for Applied Energy Research, University of Kentucky, Lexington, KY 40506-0055, USA.
2. E. Richter, K. A. Williams, S. Fang, K. R. Subbaswamy, Department of Physics and Astronomy, University of Kentucky, Lexington, KY 40506-0055, USA.
3. S. Bandow, Instrument Center, Institute for Molecular Science, Myodaiji, Okazaki 444, Japan.
4. B. Chase, Dupont Experimental Station, E328163, P.O. Box 80328, Wilmington, DE 19880-0328, USA.
5. M. Menon, Department of Physics and Astronomy and Center for Computational Sciences, University of Kentucky, Lexington, KY 40506-0055, USA.
6. A. Thess and R. E. Smalley, Department of Chemistry, Rice University, Houston, TX 77005, USA.
7. G. Dresselhaus, Francis Bitter Magnet Laboratory, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.
8. M. S. Dresselhaus, Department of Physics and Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.