Hands-on math: a page-based multi-touch and pen desktop for technical work and problem solving. - Robert C. Zeleznik; Andrew Bragdon; Ferdi Adeputra; Hsu-Sheng Ko (UIST, 2010)

Gesture select: : acquiring remote targets on large displays without pointing. - Andrew Bragdon; Hsu-Sheng Ko (CHI, 2011)