1. Finn, R. K.: Bacteriol. Rev. 18, 255 (1954)
2. Tsao, G.: Biotech. Bioeng. 12, 51 (1970)
3. Calderbank, B.: Biochem. and Biolog. Eng. Science (Blakebrough, N. ed.), New York: Academic Press 1967
4. Uhl, V. W., Gray, J. B. (eds.): Mixing Theory and Practice, New York: Academic Press 1967
5. Schuegerl, K.: Chem. Ing. Techn. 52 (12), 951 (1980)