1. 2) H. Matsuda, A. Sakamoto, T. Kojima and Y. Hayami, Research on Coatings, 152, 63 (2010).
2. 3) H. Matsuda, T. Ooshima and Y. Hayami, Zairyo-to-Kankyo, 59 [9] 341 (2010).
3. 4) H. Matsuda and T. Ooshima, J. Jpn. Coat. Technol. Assoc., 45 [8] 296 (2010).
4. 5) H. Fujiwara and Y. Tahara, Proc. Jpn. Soc. Civ. Eng., 570, 129 (1997).