Anthony Collins Anastasia Bezerianos Gregor McEwan Markus Rittenbruch Rainer Wasinger Judy Kay Understanding file access mechanisms for embedded Ubicomp collaboration interfaces. 135-144 2009 UbiComp http://doi.acm.org/10.1145/1620545.1620567 conf/huc/2009 db/conf/huc/ubicomp2009.html#CollinsBMRWK09