1. Ruckdeschel WEW (1976) Classification of metal transfer. IIW Doc. XII-636-76
2. Ludwig HC (1957) Metal transfer characteristics in gas-shielded arc welding. Weld J 36:23s–26s
3. Needham JC, Cooksey CJ, Milner DR (1960) Metal transfer in inert-gas shielded-arc welding. Br Weld J 7:101–114
4. Liu S, Siewert TA (1989) Metal transfer in gas metal arc welding: droplet rate. Weld J 68:52s–58s
5. Lesnewich A (1958) Control of melting rate and metal transfer in gas-shielded metal-arc welding part II—control of metal transfer. Weld J 37:418s–425s