IEICE TRANSACTIONS ON COMMUNICATIONS, vol. E84B, no. 3, page. 595 - 604, 2001-03
IEEE TRANSACTIONS ON PARALLEL AND DISTRIBUTED SYSTEMS, vol. 12, no. 1, page. 38 - 59, 2001-01
WIRELESS NETWORKS, vol. 7, no. 5, page. 443 - 453, 2001-01