LECTURE NOTES IN COMPUTER SCIENCE, vol. 3045, page. 926 - 934, 2004-01
LECTURE NOTES IN COMPUTER SCIENCE, vol. 4616, page. 4 - 10, 2007-01
LECTURE NOTES IN COMPUTER SCIENCE, vol. 2248, page. 144 - 156, 2001-01
LECTURE NOTES IN COMPUTER SCIENCE, vol. 3045, page. 847 - 856, 2004-01
LECTURE NOTES IN COMPUTER SCIENCE, vol. 2971, page. 97 - 111, 2004-01
LECTURE NOTES IN COMPUTER SCIENCE, vol. 2384, page. 190 - 202, 2002-01
LECTURE NOTES IN COMPUTER SCIENCE, vol. 2551, page. 285 - 295, 2002-01