Ping, J.
Kono, Y.
Matsumoto, K.
Otsuka, Y.
Saito, A.
Shum, C.
Heki, K.
Kawano, N.
Article History
Received: 13 September 2002
Revised: 6 December 2002
Accepted: 12 December 2002
First Online: 21 June 2014
Free to read: This content has been made available to all.