Ripples: utilizing per-contact visualizations to improve user interaction with touch displays. - Daniel Wigdor; Sarah Williams 002; Michael Cronin; Robert Levy; Katie White; Maxim Mazeev; Hrvoje Benko (UIST, 2009)

Rock & rails: extending multi-touch interactions with shape gestures to enable precise spatial manipulations. - Daniel Wigdor; Hrvoje Benko; John Pella; Jarrod Lombardo; Sarah Williams 002 (CHI, 2011)

As We May Ink?: Learning from Everyday Analog Pen Use to Improve Digital Ink Experiences. - Yann Riche; Nathalie Henry Riche; Ken Hinckley; Sheri Panabaker; Sarah Fuelling; Sarah Williams 002 (CHI, 2017)