A. Aiestaran, A. Agirre, B. Zabalondo, and T. Ramirez de la Piscina, “Evaluation of the news quality of the Basque press compared with the European reference press”, Estud. mensaje periodís., vol. 21, pp. 47–62, Oct. 2015, doi: 10.5209/rev_ESMP.2015.v21.50653.