“L. Molenaar, Marcel Minnaert, Astrofysicus 1893-1970. De Rok Van Het Universum”. BMGN - Low Countries Historical Review 119, no. 2 (January 1, 2004): 277–279. Accessed June 30, 2024. https://ojstest.minions.amsterdam/article/view/URN%3ANBN%3ANL%3AUI%3A10-1-106955.