1. 2) H. Amaya, K. Kondo and H. Hirata, CORROSION/98, Paper No. 113 (1998).
2. 3) M. Ueda, T. Kushida, K. Kondo and T. Kudo, CORROSION/92, Paper No. 55 (1992).
3. 4) M. Kimura, T. Tamari, Y. Yamazaki and K. Sakata, CORROSION/2005, Paper No. 05108 (2005).
4. 5) H. Takabe, K. Kondo, H. Amaya, T. Ohe, Y. Otome, S. Nakatsuka and M. Ueda, CORROSION/2012, Paper No. 1277 (2012).
5. 6) M. Kimura and K. Shimamoto, EuroCorr2011, paper No. 4538 (2011).