P. Dütting, M. H. Henzinger, and M. Starnberger, “Auctions for heterogeneous items and budget limits,” ACM Transactions on Economics and Computation, vol. 4, no. 1. Association for Computing Machinery, 2015.
LibreCat: https://research-explorer.ista.ac.at/record/11669
DOI: 10.1145/2818351
arXiv: 1209.6448