del Castillo Cossío, María Dolores. “Ambiguities in 3D: Impossible Figures”. Revista de Bellas Artes. Artes plásticas, estética, diseño e imagen, no. 9 (April 22, 2011): 73–86. Accessed November 11, 2026. https://www.ull.es/revistas/index.php/artes/article/view/5447.