PLANTA MEDICA, vol. 57, no. 1, page. 53 - 55, 1991-02
PLANT CELL REPORTS, vol. 8, no. 8, page. 463 - 466, 1989-12
JOURNAL OF FERMENTATION AND BIOENGINEERING, vol. 74, no. 5, page. 292 - 296, 1992-01
JOURNAL OF PLANT PHYSIOLOGY, vol. 136, no. 2, page. 236 - 239, 1990-05