Chung, Kuo-LiangKuo-LiangChungYan, Wen-MingWen-MingYanWu, Jung-GenJung-GenWu2009-05-132018-07-052009-05-132018-07-052002http://ntur.lib.ntu.edu.tw//handle/246246/155878application/pdf196930 bytesapplication/pdfen-USOptimal hierarchies for quadrilateral surfacesjournal articlehttp://ntur.lib.ntu.edu.tw/bitstream/246246/155878/1/23.pdf