@inproceedings{twosidedcomb,
 author = {Riccardo Colini-Baldeschi and Paul W. Goldberg and Bart de Keijzer and Stefano Leonardi and Tim Roughgarden and Stefano Turchetta},
 title = {Approximately Efficient Two-Sided Combinatorial Auctions},
 booktitle = {Proceedings of the 2017 ACM Conference on Economics and Computation},
 year = {2017},
 pages = {591--608},
 numpages = {18},
 publisher = {ACM}
}