International Journal of Human-Computer Studies
International Journal of Human - Computer Studies > 2009 > 67 > 3 > 225-236
International Journal of Human - Computer Studies > 2009 > 67 > 3 > 269-278
International Journal of Human - Computer Studies > 2009 > 67 > 3 > 237-255
International Journal of Human - Computer Studies > 2009 > 67 > 3 > 256-268