1. 1) H. Yamamoto, S Harada and T. Yasuda: Weld. Int., 1990, 4, (5), 398-407.
2. 2) H. Matsui and H. Suzuki: Weld. Int., 1998, 12, (3), 180-185.
3. 3) K. Aimi, Y. Mukai, H. Oyama, H. Nakata, W. Takahashi T. Ikeda and A. Kawamoto: Development of a special robot system in the arc welding, IIW Doc XII-1863-05, 102-111, IIW, 2005.
4. 4) M. Kiyohara, T. Okada and H. Yamamoto: On the stability of metal transfer in short circuiting arc welding and the new control system, IIW Doc 212-276-73, IIW, 1973.
5. 5) P. Boughton and G. MacGregor: Control of short circuiting in MIG welding, Welding Research International, 1974, 4, (2), 31-53.