Jakob E. Bardram Henrik Bærbak Christensen Pervasive Computing Support for Hospitals: An overview of the Activity-Based Computing Project. 44-51 2007 6 IEEE Pervasive Computing 1 http://doi.ieeecomputersociety.org/10.1109/MPRV.2007.19 db/journals/pervasive/pervasive6.html#BardramC07