Paul Barham Boris Dragovic Keir Fraser Steven Hand Timothy L. Harris Alex Ho Rolf Neugebauer Ian Pratt Andrew Warfield Xen and the art of virtualization. 164-177 2003 conf/sosp/2003 SOSP http://doi.acm.org/10.1145/945445.945462 db/conf/sosp/sosp2003.html#BarhamDFHHHN03