References
  - Y. Takeuchi, H. Hosoya, M. M.
  Ito and H. Yoshida, 16th International Conference on Chemical
  Education, Cairo (1998); Y. Takeuchi, H. Hosoya, H. Yoshida and
  M. M. Ito, Pure Apple. Chem., 71, 825 (1999).
  
- M. M. Ito, Y. Takeuchi, H. Yoshida,
  and T. Moriya, The 8th Asian Chemical Congress, Taipei (1999).
  
- H. Yoshida, H. S. Rzepa, A. P.
  Tonge, J. Mol. Graph. Mod., 16, 144 (1998); H. Yoshida, Molecular
  Modeling on Computers, Science House, Tokyo (2000); MOLDA
  Home Page, http://cssj.chem.sci.hiroshima-u.ac.jp/molda/.
  
- Minnesota Supercomputer Center,
  Inc., XMol User Guide, http://www.kfa-juelich.de/zam/CompServ/software/graph/xmol/.
  
- Protein Data Bank, Brookhaven
  National Laboratory, http://pdb.pdb.bnl.gov/.
  
- P. Murray-Rust, 'Chemical Markup
  Language, A simple introduction to structured documents', in
  XML, Principles, Tools and Techniques (Ed. D. Connolly,),
  O'Reilly, 1997, pp 135-149.
  
- Web3D Consortium, the VRML Repository,
  http://www.web3d.org/vrml/vrml.htm.
  
- J. W. Ponder, TINKER: Software
  Tools for Molecular Design, http://dasher.wustl.edu/tinker/.
  
- J. J. P. Stewart, MOPAC: A
  General Molecular Orbital Package (Version 6.0), QCPE #455.
  
- M. J. Frisch, G. W. Trucks, H.
  B. Schlegel, G. E. Scuseria, M. A. Robb, J. R. Cheeseman, V.
  G. Zakrzewski, J. A. Montgomery, Jr., R. E. Stratmann, J. C.
  Burant, S. Dapprich, J. M. Millam, A. D. Daniels, K. N. Kudin,
  M. C. Strain, O. Farkas, J. Tomasi, V. Barone, M. Cossi, R. Cammi,
  B. Mennucci, C. Pomelli, C. Adamo, S. Clifford, J. Ochterski,
  G. A. Petersson, P. Y. Ayala, Q. Cui, K. Morokuma, D. K. Malick,
  A. D. Rabuck, K. Raghavachari, J. B. Foresman, J. Cioslowski,
  J. V. Ortiz, B. B. Stefanov, G. Liu, A. Liashenko, P. Piskorz,
  I. Komaromi, R. Gomperts, R. L. Martin, D. J. Fox, T. Keith,
  M. A. Al-Laham, C. Y. Peng, A. Nanayakkara, C. Gonzalez, M. Challacombe,
  P. M. W. Gill, B. Johnson, W. Chen, M. W. Wong, J. L. Andres,
  C. Gonzalez, M. Head-Gordon, E. S. Replogle and J. A. Pople,
  Gaussian 98, Gaussian, Inc., Pittsburgh PA, 1998.
  
- Sun Microsystems, Inc., Java Developer's
  Kit, http://www.javasoft.com/products/java-media/3D/index.html.
  
- Sony Corporation, Sony's Community
  Place Website, http://www.community-place.com/.