Sachiko Kawachiya Takeo Igarashi Satoshi Matsuoka Hidehiko Tanaka Reduction of Overhead in Drawing Figures with Computer: Detailed Analyses of Drawing Tasks. 11-18 1998 conf/apchi/1998 APCHI http://csdl.computer.org/dl/proceedings/apchi/1998/8347/00/83470011.pdf db/conf/apchi/apchi1998.html#KawachiyaIMT98