Optimal Inapproximability for Scheduling Problems via Structural Hardness for Hypergraph Vertex Cover. Sachdeva, S. & Saket, R. In IEEE Conference on Computational Complexity (CCC, pages 219-229, 2013.
bibtex   
@INPROCEEDINGS{SachdevaS13, 
author={Sachdeva, Sushant and Saket, Rishi}, 
booktitle={IEEE Conference on Computational Complexity (CCC}, 
title={Optimal Inapproximability for Scheduling Problems via Structural Hardness for Hypergraph Vertex Cover}, 
year={2013}, 
pages={219-229}, 
}

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