1. Welfare guarantees for combinatorial auctions with item bidding;K Bhawalkar;Proceedings of the 22nd Annual ACM-SIAM Symposium on Discrete Algorithms (SODA '11),2011
2. Bayesian combinatorial auctions;A Kov�acs;Proceedings of the 35th International Colloquium on Automata, Languages and Programming (ICALP '08),2008