Ayala, D., Roldán, J.C., Ruiz, D. and Gallego, F.O. 2015. An approach for discovering keywords from Spanish tweets using Wikipedia. ADCAIJ: Advances in Distributed Computing and Artificial Intelligence Journal. 4, 2 (May 2015), 73–88. DOI:https://doi.org/10.14201/ADCAIJ2015427388.