Phitha Tanpairoj. (1999) Fair cash scheme based on Okamoto's divisible electronic cash. Mahidol University,:ม.ป.ท.Phitha Tanpairoj. 1999. Fair cash scheme based on Okamoto's divisible electronic cash. ม.ป.ท.:Mahidol University,;Phitha Tanpairoj. Fair cash scheme based on Okamoto's divisible electronic cash. ม.ป.ท.:Mahidol University, 1999. Print.