Soen, V. “M. Lamster, De Meester Van De Schaduw. Peter Paul Rubens, Geheim Agent”. BMGN - Low Countries Historical Review 126, no. 2 (January 1, 2011). Accessed April 23, 2024. https://bmgn-lchr.nl/article/view/URN%3ANBN%3ANL%3AUI%3A10-1-108486.