| http://www.w3.org/ns/prov#value | - For instance, in one embodiment of the present, the process for distributing the file to mirror sites is a variant of the well-known conventional NP hard problem as discussed in ???Computers and Intractability???A Guide to the Theory of NP-Completeness,??? by M. R. Garey, et al., page 9, W. H. Freeman and Company, New York, 1979, which is incorporated herein by reference.
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