王藹侯Jan, Ji-HauJi-HauJanKo, Liang-ShiLiang-ShiKoWang, Ai-HouAi-HouWang2009-02-122018-07-122009-02-122018-07-121990http://ntur.lib.ntu.edu.tw//handle/246246/130807en-USCheckerboard,Grating and Dartboard with 8 Attributes on IBM PC