Ultrasonic phased array applied to the study of the welding. Captive Gaul, Gaul, last quarter of the 1st century BCE, H. 63 cm (Musée départemental Arles Antique [MDAA], France, inv. Rho.2007.06.1962). See Azéma, Aurélia, Florent Angelini, Benoît Mille, Gaëlle Framezelle, and Daniel Chauveau. 2013. “Ultrasonic Phased Array Contribution to the Knowledge of the Flow Fusion Welding Process Used to Make the Roman Large Bronze Statues.” Welding in the World 57 (4): 477–86..