Using games to increase exercise motivation. - Jeffrey Yim; T. C. Nicholas Graham (Future Play, 2007)

Experience in the design and development of a game based on head-tracking input. - Jeffrey Yim; Eric Qiu; T. C. Nicholas Graham (Future Play, 2008)

Heart rate control of exercise video games. - Tadeusz Stach; T. C. Nicholas Graham; Jeffrey Yim; Ryan E. Rhodes (Graphics Interface, 2009)