1. 1) C. Sagawa, T. Suzuki, T. Tujita, K. Maeda and S. Okamoto; Surface Coatings International, 3 (1994), 94.
2. 2) E. M. Ceresa, L. Burlamacchi and M. Visca : J. Mater, Sci., 18 (1983), 289.
3. 5) S. Okamoto, K. Hikita, and H. Ohya-Nishiguchi ; Polymers Paint Colour J., 177 [4200] (1987), 683.
4. 7) S. Okamoto and H. Ohya-Nishiguchi : Euro. Coat, [3] (1989), 206.
5. 13) S. Okamoto and H. Ohya : Bull. Chem. Soc. Jpn., 63 (1990), 2346.