1. Arima K., Liu W-H., Beppu T., 1972, Agric. Biol. Chem., 11, 1913?1917
2. Harder W., Dijkhuizen L., Veldkamp H., 1984, The Microbe 1984, Ed. Kelly D. P., Carr N.G. Cambridge University Press 51-95
3. Liu W-H., Beppu T., Arima K., 1972, Agric. Biol. Chem., 11, 193?200
4. Liu W.H., Beppu T., Arima K., 1973, Agric. Biol. Chem., 37, 2487?2492
5. Tan K.H., Gill, C.O., 1984, Appl. Microbiol. Biotechnol., 20, 201?206