Yoshinao Takemae Shuichi Chaki Takehiko Ohno Ikuo Yoda Shinji Ozawa Analysis of human interruptibility in the home environment. 2681-2686 2007 conf/chi/2007a CHI Extended Abstracts http://doi.acm.org/10.1145/1240866.1241062 db/conf/chi/chi2007a.html#TakemaeCOYO07