Suwimon Paisanwattana. (1999) Design a new computerized charging system via expressway tag. Mahidol University,:ม.ป.ท.Suwimon Paisanwattana. 1999. Design a new computerized charging system via expressway tag. ม.ป.ท.:Mahidol University,;Suwimon Paisanwattana. Design a new computerized charging system via expressway tag. ม.ป.ท.:Mahidol University, 1999. Print.