arXiv Van de Sompel, Herbert Bekaert, Jeroen Liu, Xiaoming Balakireva, Lyudmila Schwander, Thorsten 2005-02-03T03:38:52Z 2005-02-04T03:38:52Z 2005 http://arxiv.org/abs/cs.DL/0502028 29 leaves application/pdf eng arXiv aDORe: a modular, standards-based Digital Object Repository