Choi, Y. K.

• Tricarboxylic Acid Biosurfactant Derived from Spiculisporic Acid
  Y. K. Choi, C. H. Lee, Y. Takizawa, Y. Gama, and Y. Ishigami
  [J. Jpn. Oil Chem. Soc., Vol.42, No.2, pp.95-99,1993]

• Colloid Chemical Effect of Polar Head Moieties of a Rhamnolipid-Type Biosurfactant
  Y. Ishigami, Y. Gama, F. Ishii, and Y. K. Choi
  [Langmuir 1993, Vol.9, pp.1634-1636]