1. Fowler, M. W.: Chem. Ind. (7), 229 (1981)
2. Yeoman, M. M.: Plant Cell Culture Symp., London, Oyez 1982
3. Yeoman, M. M. et al.: Plant Cell Culture (Sala, Parisi, Cella and Ciferra eds.), Amsterdam: Elsevier 1980
4. Yeoman, M. M. et al.: Differentiation in Vitro (Yeoman and Truman, eds.), Cambridge: C.U.P. 1982
5. Trevan, M.: Immobilized Enzymes, New York: Wiley 1980