BRACKE, N. P. Halens, Dolen of dwalen. Paul Robin (1837-1912). Pedagoog, anarchist, vrijmetselaar. BMGN - Low Countries Historical Review, [S. l.], v. 116, n. 2, p. 243–244, 2001. DOI: 10.18352/bmgn-lchr.5476. Disponível em: https://bmgn-lchr.nl/article/view/URN%3ANBN%3ANL%3AUI%3A10-1-106290. Acesso em: 16 apr. 2024.