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@article{DBLP:journals/acta/Helman89,
author = {Paul Helman},
title = {A Family of NP-Complete Data Aggregation Problems},
journal = {Acta Inf.},
volume = {26},
number = {5},
year = {1989},
pages = {485-499},
bibsource = {DBLP, http://dblp.uni-trier.de}
}
Copyright © 2003-11-25 by Michael Ley (ley@uni-trier.de)