ISTOMINA, Nadezhda A. On the Question of Functioning and Existence of Portrait Drawings by Hans Holbein the Younger. Actual Problems of Theory and History of Art, [S. l.], v. 7, p. 573–580, 2017. DOI: 10.18688/aa177-5-58. Disponível em: https://publ.actual-art.org/aptha/article/view/10609. Acesso em: 14 mar. 2025.