The siphon-bridges of the Gier Roman aqueduct (Lyons). Inclined decks and open piers - Burdy, J. (Cura aquarum in Israel. Proceedings of the 11th International Conference on the History of Water Management and Hydraulic Engineering in the Mediterranean Region, Israel 7 - 12 May 2001. Beiträge des 11. Internationalen Symposiums zur Geschichte der Wasserwirtschaft und des Wasserbaus im mediterranen Raum, Israel 7. - 12. Mai 2001)