- part (1)
http://air.geo.tsukuba.ac.jp/~eddie/2005/05/26/58.html
- part (2)
http://air.geo.tsukuba.ac.jp/~eddie/2005/05/27/59.html
- part (3)
http://air.geo.tsukuba.ac.jp/~eddie/2005/05/28/60.html
- part (4)
http://air.geo.tsukuba.ac.jp/~eddie/2005/05/30/61.html