Gary Hsieh Ian Li Anind K. Dey Jodi Forlizzi Scott E. Hudson Using visualizations to increase compliance in experience sampling. 164-167 2008 UbiComp http://doi.acm.org/10.1145/1409635.1409657 conf/huc/2008 db/conf/huc/ubicomp2008.html#HsiehLDFH08