A pre-experiment on effects of horizontal and vertical touch displays on group work in card classification tasks. - Meiting Mi; Shun'ichi Tano; Tomonori Hashiyama; Junko Ichino; Mitsuru Iwata; Junko Misawa; Yushin Kakei; Takaaki Hagi; Hirofumi Mochizuki; Keisuke Yonemoto (CogInfoCom, 2013)