1. 1. J. FARBE, Surfactants in Consumer Products, Springer-Verlag, p. 206 (1986).
2. 2. S. NAKANISHI, Y. IWASAKI, M. SAITO, S. ABE and H. MASUKO, Hihukuseirigaku, Asakurashoten, Tokyo, p. 16 (1990).
3. 3. Y. MIZUNOE, Y. IWASAKI, S. ABE, H. IKUNO, M. KATAYAMA, Y. KOBAYASHI and A. MURAKAMI, Hihukuseirigaku, Kenpakusha, Tokyo, p. 22 (1988).
4. 4. M.J. ROSEN, Surfactants and Interfacial Phenomena, translated in Japanese, Fragrance Journal Ltd., Tokyo, p. 384 (1995).