NIAS, S. L. The Joy of the Gradient in its Printed and Natural Forms. IMPACT Printmaking Journal, [S. l.], p. 8, 2025. DOI: 10.54632/220425/IMPJ6. Disponível em: https://impact-journal-cfpr.uwe.ac.uk/index.php/impact/article/view/152. Acesso em: 29 apr. 2026.