Berlt, K., Pessoa, M., Herrera, M., Sena, C. A., Cristo, M., & de Moura, E. S. (2011). ACAKS: An Ad-Collection-Aware Keyword Selection Approach for Contextual Advertising. Journal of Information and Data Management, 2(3), 243. https://doi.org/10.5753/jidm.2011.1407