1. Buitelaar, R.M., Langenhoff, A.A.M., Heidstra, R. and Tramper, J. (1991), Enzyme Microb. Technol. 13, 487?494.
2. Gamborg, O.L., Miller, R.A. and Ojima, K. (1968), Exp. Cell Res. 50, 151?158.
3. Gomez-Barrios, M.D., Vargas, D., Quijano, L., Hjortso, M.A., Flores, H.E. and Fischer, N.H. (1992), Phytochemistry 31, 2703?2707.
4. Hilton, M.G., Wilson, P.D.G., Robins, R.J. and Rhodes, M.J.C. (1988), Transformed root cultures-fermentation aspects. In: Manipulating Secondary Metabolism in Culture, R.J. Robins and M.J.C. Rhodes, eds., pp. 239?245, Cambridge: Cambridge University Press.
5. Hilton, M.G. and Rhodes, M.J.C. (1990), Appl. Microbiol. Biotechnol. 33, 132?138.