Métros: Litterature
- Vom Bau der Metro in Rotterdam. Dans: Schweizerische Bauzeitung (1947-1978), v. 86, n. 29 (18 juillet 1968). (1968):
- Work begins on first two-track line tunnel of prague metro network. Dans: Tunnelling and Underground Space Technology, v. 11, n. 1 (janvier 1996), pp. 99-103.