Bogucki, Mateusz. “Jørgen Steen Jensen Died (November 1, 1938 – February 1, 2025)”. Wiadomości Numizmatyczne 69, no. 213 (December 23, 2025): 213–215. Accessed February 11, 2026. https://journals.iaepan.pl/wn/article/view/4270.