[ Research papers ]

1) K. Harigaya:
   Optical excitations in fractal antenna supermolecules
   with conjugated electrons: extended dendrimers,
   Chem. Phys. Lett. 300 (1999) 33-36.
2) K. Harigaya:
   Coupled exciton model with off-diagonal disorder
   for optical excitations in extended dendrimers,
   Phys. Chem. Chem. Phys. 1 (1999) 1687-1689.
3) K. Harigaya:
   Optical excitations in diphenylacetylene based dendrimers
   studied by a coupled exciton model with off-diagonal disorder,
   Int. J. Mod. Phys. B 13 (1999) 2531-2544.
4) K. Harigaya:
   Electronic states of metallic and semiconducting carbon
   nanotubes with bond and site disorder,
   Phys. Rev. B. 60 (1999) 1452-1455.

[ Conference proceedings ]

1) K. Harigaya:
   Optical excitations in fractal antenna supermolecules:
   extended dendrimers,
   in "Proceedings of 4th Int. Symposium on Advanced Physical
   Fields: Quantum Phenomena in Advanced Materials at High
   Magnetic Fields", (Tsukuba, 1999), pp. 311-313.
2) K. Harigaya:
   Disorder effects on density of states and electronic 
   conductance in carbon nanotubes,
   in "Electronic Properties of Novel Materials
   - Science and Technology of Molecular Nanostructures",
   (American Institute of Physics, 1999), pp. 342-345.

[ Review articles ]

1) 針谷 喜久雄：
   C60 と高次フラーレンの光学応答,
   固体物理 34 (1999) 601-608.
2) K. Harigaya:
   Electronic structures and optical excitations in C60-polymers,
   in "Fullerene Polymers and Fullerene Polymer Composites",
   edited by P. C. Eklund and A. M. Rao,
   (Springer-Verlag, 1999), Chapter 9.