Open Access System for Information Sharing

IEICE TRANSACTIONS ON COMMUNICATIONS, vol. E92B, no. 12, page. 3927 - 3930, 2009-12

IEICE TRANSACTIONS ON INFORMATION AND SYSTEMS, vol. E85D, no. 6, page. 1049 - 1051, 2002-06

LECTURE NOTES IN COMPUTER SCIENCE, vol. 3260, page. 451 - 465, 2004-01

LECTURE NOTES IN COMPUTER SCIENCE, vol. 3090, page. 370 - 379, 2004-01

LECTURE NOTES IN COMPUTER SCIENCE, vol. 2662, page. 141 - 150, 2003-01