1. Atlas Muon Collaboration, CERN/LHCC 97–22 (1977).
2. Y. Hasegawa, Proc. International Conference on High Energy Physics, Jerusalem, Israel (1997).
3. S.F. Biagi, Nucl. Instrum. Methods A 283 (1989) 716.
4. S.F. Biagi, Magboltz, 1994.
5. R. Veenhof, Garfield, 1996, Cern, also
http://wwwcn.cern.ch/writeup/gas/examples/trans2000.
html.