Fabio Corubolo Paul B. Watry John Harrison Location and Format Independent Distributed Annotations for Collaborative Research. 495-498 2007 conf/ercimdl/2007 ECDL http://dx.doi.org/10.1007/978-3-540-74851-9_50 db/conf/ercimdl/ecdl2007.html#CoruboloWH07