Antony Chazapis Georgios Tsoukalas Georgios Verigakis Kornilios Kourtis Aristidis Sotiropoulos Nectarios Koziris Global-scale peer-to-peer file services with DFS. 251-258 2007 conf/grid/2007 GRID http://dx.doi.org/10.1109/GRID.2007.4354140 db/conf/grid/grid2007.html#ChazapisTVKSK07