1. 1) N. Kosaric, W. L. Cairns, N. C. C. Gray, eds :, “Biosurfactants and Biotechnology”, Marcel Dekker, (1987), New York
2. 2) Y. Ishigami : Hyomen, 27,457 (1989)
3. 3) L. Thimon, F. Peypoux, J. Wallach, G. Michel : Colloid and Surfaces, B : Biointerfaces, 1, 57 (1993)
4. 4) J. Kakinuma, K. Arima : Ann. Rept. Takeda Res. Lab., 28,140 (1969)
5. 5) J. Kakinuma, G. Tamura, K. Arima : Separaturn Experientia, 24, 1120 (1968)