1. Boyaval P., Corre, C. and Terré S. (1987).Biotech. Lett.,9, 207?212.
2. Carrondo M.J.T., Crespo J.P.S.G. and Moura M.J. (1987)Proc. 4th Eur. Congress Biotechnol., Vol I, 97?100.
3. Cavin J.F., Saint. C. and Divies C. (1985).Biotech. Lett.,7, 821?826.
4. Clausen E.C. and Gaddy J.L. (1984).Chem. Eng. Prog.,80, 59?63.
5. Goma G., Uribelarrea J.L, Soucaille P., Minier M. and Ferras E. (1984).Proc. 3rd Eur. Congr. Biotechnol., Munich, Vol II, 451.