FABRIZI, M. The Otterlo Circles by Aldo van Eyck. Collage as condensed theory. piano b. Arti e culture visive, [S. l.], v. 4, n. 2, p. 1-15, 2020. DOI: 10.6092/issn.2531-9876/10527. Disponível em: https://pianob.unibo.it/article/view/10527. Acesso em: 17 gen. 2021.