Yui-Wah Lee Kwong-Sak Leung Mahadev Satyanarayanan Operation-based Update Propagation in a Mobile File System. 43-56 1999 conf/usenix/1999g USENIX Annual Technical Conference, General Track http://www.usenix.org/events/usenix99/full_papers/lee/lee.pdf db/conf/usenix/usenix1999g.html#LeeLS99