@inproceedings{hniid=3809,
author = {Briest, Patrick and Krysta, Piotr},
title = {Buying Cheap is Expensive: Hardness of Non-Parametric Multi-Product Pricing},
booktitle = {Proceedings of the 18th ACM-SIAM Symposium on Discrete Algorithms (SODA)},
year = {2007},
}