FEIGE, U.; FELDMAN, M.; IMMORLICA, N.; IZSAK, R.; LUCIER, B.; SYRGKANIS, V. A Unifying Hierarchy of Valuations with Complements and Substitutes. Proceedings of the AAAI Conference on Artificial Intelligence, [S. l.], v. 29, n. 1, 2015. DOI: 10.1609/aaai.v29i1.9314. Disponível em: https://ojs.aaai.org/index.php/AAAI/article/view/9314. Acesso em: 23 apr. 2024.