Willequet J. R. Johansson, Small state boundary conflict. Belgium and the Belgian-German border 1914-1919. BMGN-LCHR [Internet]. 1990 Jan. 1 [cited 2024 Apr. 24];105(4):654-5. Available from: https://bmgn-lchr.nl/article/view/URN%3ANBN%3ANL%3AUI%3A10-1-103775