Oskar Juhlin, Mattias Östergren. Time to meet face-to-face and device-to-device. In Marko Nieminen, Mika Röykkee, editors, Proceedings of the 8th Conference on Human-Computer Interaction with Mobile Devices and Services, Mobile HCI 2006, Helsinki, Finland, September 12-15, 2006. pages 77-80, ACM, 2006. [doi]
Abstract is missing.