Gas influence on the arc shape in MIG-MAG weldingS. Zielinska, S. Pellerin, F. Valensi, K. Dzierzega, K. Musiol, Ch. de Izarra and F. BriandEur. Phys. J. Appl. Phys., 43 1 (2008) 111-122DOI: https://doi.org/10.1051/epjap:2008106