de Campos, D. and Buso, L. 2020. Deaf sign language hidden in the fresco The Crucifixion of Saint Peter by Michelangelo Buonarroti (1475-1564): Michelangelo and deaf sign language. Acta Biomedica Atenei Parmensis. 91, 4 (Nov. 2020), e2020192. DOI:https://doi.org/10.23750/abm.v91i4.9069.