Replication in Ficus Distributed File Systems - Paper by Gerald J. Popek, Richard G. Guy, Thomas W. Page, Jr., and John S. Heidemann, University of California, Los Angeles. - http://www.isi.edu/~johnh/PAPERS/Popek90a.html
MITRA File System - MITRA - A Continuous Media Server - http://perspolis.usc.edu/Users/zimmerma/mitra/report_5.html