1.
Boersma K. J.W. Schot, Techniek in Nederland in de twintigste eeuw, V, Transport, communicatie. BMGN-LCHR [Internet]. 2004 Jan. 1 [cited 2024 May 2];119(1):128-9. Available from: https://bmgn-lchr.nl/article/view/URN%3ANBN%3ANL%3AUI%3A10-1-106884