Sadler, Kirsten, Robertson, Toni and Melanie, Kan (2006) "It's always there, it's always on": Australian freelancer's management of availability using mobile technologies. In: MobileHCI 06: 8th International Conference on Human-Computer Interaction with Mobile Devices and Services : 12 to 15 September 2006, Espoo, Finland. ACM International Conference Proceeding Series . Association for Computing Machinery, New York, pp. 49-52.