o:294517 Challenges and Requirements in Preserving DNS Digital Data Presentation - iPRES 2007 - Beijing en x iPRES, Beijing 2013-07-03T11:35:30.924Z 44 yes 46 Wei Wang application/pdf 186384 http://phaidra.univie.ac.at/o:294517 no yes 15 70 12 1068391 1068393