“E. Arnaldo Alcubilla, M. Delgado-Iribarren García-Campero and A.J. Sánchez Navarro: «Popular Legislative Initiative» (Review)”. 2015. Journal of the Cortes Generales, no. 94-95-96 (December): 469-78. https://doi.org/10.33426/rcg/2015/94-95-96/1219.