Zvereva, Alexandra A. “Gillis Claeissens (1536 37–1605), the Unknown Master from Bruges: Difficulties With the Attribution of Northern Renaissance Portraits”. Actual Problems of Theory and History of Art 6 (October 11, 2016): 441–450. Accessed December 5, 2025. https://publ.actual-art.org/aptha/article/view/10454.