Zehua Liu Hai Yu Ee-Peng Lim Ming Yin Dion Hoe-Lian Goh Yin Leng Theng Wee Keong Ng 87-105 2004 53 Sci. Comput. Program. 1 http://dx.doi.org/10.1016/j.scico.2004.02.007 db/journals/scp/scp53.html#LiuYLYGTN04