A. L. Moreno-Albarracín, C. Ortega-Rodríguez, A. Licerán-Gutiérrez, Álvaro Labella, and L. Martínez, “Transparency indicators to improve accountability for non-profit organizations: a Spanish case study”, TEDE, vol. 27, no. 3, pp. 763-782, May 2021.