Responsiveness in instant messaging: predictive models supporting inter-personal communication
Making sense of sensing systems: five questions for designers and researchers
By their apps you shall understand them: mining large-scale patterns of mobile phone usage
Friendships through IM: Examining the Relationship between Instant Messaging and Intimacy
BusyBody: creating and fielding personalized models of the cost of interruption
Didn't you see my message?: predicting attentiveness to mobile instant messages