1. Adlercreutz, P. (1986). Biotechnol. Bioeng. 28, 223–232.
2. Crank, J. (1973). The mathematics in diffusion, 2nd ed., Clarendon Press, Oxford: Clarendon Press.
3. Hiemstra, H., Dijkhuizen, L. and Harder, W. (1983). Eur. J. Appl. Micrbiol. Biotechnol. 18, 189–196.
4. Hulst, A.C. (1987). Plant cells: immobilization and oxygen transfer. Ph.D. Thesis, Wageningen Agricultural University.
5. Morris, V.J. Chem. Ind. (1985). 5, 159–164.